ASTM: D5475: Nitrogen and Phosphorus-Containing Pesticides

Summary
Analytes
Revision
Data and Sites

Official Method Name

Standard Test Method for Nitrogen- and Phosphorus-Containing Pesticides in Water by Gas Chromatography with a Nitrogen-Phosphorus Detector

Current Revision

Reapproved 1997. Current edition approved Dec. 15, 1993. Published March 1994.

Media

WATER

Instrumentation

Gas Chromatography with Nitrogen - Phosphorus Detection

Method Subcategory

Organic

Method Source

ASTM

Citation

Annual Book of ASTM Standards, Section 11, Water and Environmental Technology, Volume 11.02, Water (I)

Brief Method Summary

A measured volume of sample of approximately 1 L is extracted with methylene chloride by shaking in a separatory funnel or mechanical tumbling in a bottle. The methylene chloride extract is isolated, water is removed, and concentrated to a volume of 5 mL during a solvent exchange to methyl tert-butyl ether (MTBE). Chromatographic conditions are described that permit the separation and measurement of the analytes in the extract by capillary column GC with a nitrogen-phosphorus detector (NPD).

Scope and Application

This is a gas chromatographic (GC) test method applicable to the determination of certain nitrogen- and phosphorus-containing pesticides in ground water and finished drinking water. The analytes listed in Table 1 have been validated using this test method. This test method has been validated on reagent water and finished drinking water by 10 volunteer laboratories.

Applicable Concentration Range

Varies with the analytes listed ug/L

Interferences

Test method interferences may be caused by contaminants in solvents, reagents, glassware, and other sample processing apparatus that lead to discrete artifacts or elevated baselines in gas chromatograms. All reagents and apparatus must be routinely demonstrated to be free from interferences under the conditions of the analysis by running laboratory reagent blanks as described in Section 12.2.

Quality Control Requirements

Recommended quality control (QC) requirements are initial demonstration of laboratory capability, determination of surrogate compound recoveries in each sample and blank, monitoring internal standard peak area or height in each sample and blank (when internal standard calibration procedures are being employed), analysis of laboratory reagent blanks, laboratory fortified samples, laboratory fortified blanks, and QC samples.

Sample Handling

Collect the samples in accordance with Practices D 3370, D 3694, and Specification D 1192.
Instructions Specific to This Test Method - Grab samples must be collected in glass containers. Conventional sampling Practices D 3370 should be followed; however, the bottle must not be prerinsed with sample before collection.
If residual chlorine is present, add 80 mg of sodium thiosulfate per litre of sample to the sample bottle prior to collecting the sample.
After the sample is collected in a bottle containing preservative(s), seal the bottle and shake vigorously for 1 min. Ice or refrigerate the samples at 4^oC away from light from the time of collection until extraction. Preservation study results indicated that most test method analytes present in samples were stable for 14 days when stored under these conditions.
The analytes disulfoton sulfoxide, diazinon, pronamide, and terbufos exhibited significant aqueous instability, and samples to be analyzed for these compounds must be extracted immediately. The analytes carboxin, EPTC, fluridone, metolachlor, napropamide, tebuthiuron, and terbacil exhibited recoveries of less than 60 % after 14 days. Analyte stability may be affected by the matrix; therefore, the analyst should verify that the preservation technique is applicable to the samples under study.

Maximum Holding Time

14 days

Relative Cost

$201 to $400

Sample Preparation Methods

This method has 48 analytes associated with it.

Analyte	Detection Level	Bias	Precision	Spiking Level
Alachlor(15972-60-8) 2-Chloro-N-(2,6-diethylphenyl)-N-(methoxymethy Acetanilide,2-chloro-2',6'-diethyl-n-(methoxymethyl)- Alachlor Alanex Lasso Metachlor Methachlor	0.380 ug/L	93% Rec (ML)	16.90 % RSD (ML)	5.00 ug/L
Ametryn(834-12-8) 2-Ethylamino-4-isopropylamino-6-methylthio-s-t 2-Ethylamino-4-isopropylamino-6-methylthio-s-triazine 2-Ethylamino-4-isopropylamino-6-methylthio-s-trizaine Ametryn Ametryn (ANSI) Ametryn (N-Ethyl-N'-(1-methylethyl)-6-(methylthio)-1 ... Ametryne Cemerin Evik Gesapax	2.000 ug/L	94% Rec (ML)	15.10 % RSD (ML)	2.00 ug/L
Atrazine(1912-24-9) 1,3,5-Triazine-2,4-diamine, 6-chloro-N-ethyl-N'-(1- ... 2-Chloro-4-(ethylamino)-6-(isopropylamino)-S-triazine 2-Chloro-4-(ethylamino)-6-(isopropylamino)-s-t 2-Chloro-4-ethylamino-6-isopropylamine-sym-triazine AAtrex Atratol 8P Atrazine Atrazine (ANSI) Bicep	0.130 ug/L	93% Rec (ML)	14.50 % RSD (ML)	2.00 ug/L
Bromacil(314-40-9) 5-Bromo-3-sec-butyl-6-methyluracil Borea Bromacil Bromacil (ANSI) Bromax Hyvar Uragon Urox "B" Urox 'B'	2.500 ug/L	96% Rec (ML)	16.70 % RSD (ML)	10.00 ug/L
Butachlor(23184-66-9) 2-Chloro-2',6'-diethyl-N-(butoxymethyl)acetanilide Acetamide, N-(butoxymethyl)-2-chloro-N-(2,6-di Acetanilide,2-chloro-2',6'-diethyl-n-(butoxymethyl)- Butachlor Butachlor (ANSI) Butanox Hiltachlor Machete N-(Butoxymethyl)-2-chloro-N-(2,6-diethylphenyl)acetamide N-(butoxymethyl)-2-chloro-2',6'-diethyl acetan N-(butoxymethyl)-2-chloro-2',6'-diethyl acetanilide	0.380 ug/L	94% Rec (ML)	15.50 % RSD (ML)	10.00 ug/L
Butylate(2008-41-5) Anelda Butylate Carbamic acid, diisobutylthio-, S-ethyl ester Carbamothioic acid, bis(2-methylpropyl)-, S-et Carbamothioic acid, bis(2-methylpropyl)-, S-ethyl ester Diisocarb S-Ethyl diisobutylthiocarbamate S-Ethyldiisobutyl thiocarbamate Sutan bis(2-Methylpropyl)carbamothioate-S-ethyl n,n-Diisobutylthiocarbamate-Ethyl	0.150 ug/L	76% Rec (ML)	23.40 % RSD (ML)	5.00 ug/L
Carbamate pesticides(E-12895) Carbamate pesticides Carbamate pesticides, N-methyl- N-methyl carbamate pesticides	N/A	N/A	N/A
Carboxin(5234-68-4) 2,3-Dihydro-6-methyl-1,4-oxathiin-5-carboxanil 2,3-Dihydro-6-methyl-1,4-oxathiin-5-carboxanilide 5,6-Dihydro-2-methyl-1,4-oxathiin-3-carboxanalide Carbathiin Carboxin Carboxin (5,6-Dihydro-2-methyl-N-phenyl-1,4-oxathiin ... Fenoxan Vitavax	0.600 ug/L	80% Rec (ML)	21.40 % RSD (ML)	10.00 ug/L
Chlorpropham(101-21-3) CIPC CIPC, Chloro-IPC Carbamic acid, (3-chlorophenyl)-, 1-methylethy Carbamic acid, (3-chlorophenyl)-, 1-methylethyl ester Chloro-IPC Chlorocarbanilic acid,m-, isopropyl ester Chloropropham, Chlorpropham Chlorpropham Furloe Isopropyl 3-chlorocarbanilate Isopropyl N-(3-chlorophenyl)carbamate Isopropyl-3-chlorocarbanilate Metoxon Preventol n-3-Chlorophenylisopropylcarbamate	0.500 ug/L	98% Rec (ML)	18.20 % RSD (ML)	10.00 ug/L
Cycloate(1134-23-2) Carbamothioic acid, cyclohexylethyl-, S-ethyl Carbamothioic acid, cyclohexylethyl-, S-ethyl ester Cycloate Cyclohexanecarbamic acid,n-ethylthio-, s-ethyl ester Etsan Etsan, Eurex Eurex Hexylthiocarbam N-ethylthiocyclohexanecarbamic acid, s-ethyl ester Ro-Neet S-Ethyl N-cyclohexyl-N-ethylthiocarbamate S-Ethyl cyclohexylethylthiocarbamate S-Ethyl-N-cyclohexyl-N-ethylthiocarbamate Sabet	0.250 ug/L	56% Rec (ML)	19.50 % RSD (ML)	5.00 ug/L
Diazinon(333-41-5) Alfa-tox Basudin Diazide, Diazinone, Diazitol, Diazol Diazinon Diazinon (ANSI) Diazitol Dimpylate Dipofene Spectracide	0.250 ug/L	89% Rec (ML)	19.20 % RSD (ML)	2.00 ug/L
Dichlorvos(62-73-7) 2,2-Dichloroethenyldimethylphosphate 2,2-Dichlorovinyl dimethyl phosphate Canogard Cyanophos DDVP Dichlorphos Dichlorvos Dichlorvos [phosphoric acid, 2,2-dichloroethenyl ... Vapona	2.500 ug/L	100% Rec (ML)	15.60 % RSD (ML)	5.00 ug/L
Diphenamid(957-51-7) 2,2-Diphenyl-N,N-dimethylacetamide Acetamide,n,n-dimethyl-2,2-diphenyl Benzeneacetamide, N,N-dimethyl-.alpha.-phenyl- Diherbid Dimid, Dymid Diphenamid Diphenamid (ANSI) Dymid Enide N,N-Dimethyl-2,2-diphenylacetamide N,N-Dimethyldiphenylacetamide Rideon	0.600 ug/L	94% Rec (ML)	15.90 % RSD (ML)	5.00 ug/L
Disulfoton(298-04-4) Disulfoton Disulphoton Disyston Disyston S Thiodemeton o,o-Diethyl-s-(2-eththioethyl)phosphorodithioate	0.300 ug/L	86% Rec (ML)	19.00 % RSD (ML)	2.00 ug/L
Disulfoton sulfone(2497-06-5) Disulfoton sulfone Disulfotonsulfone Disyston sulfone O,O-Diethyl S-(2-ethylsulfonylethyl) phosphoro O,O-Diethyl S-(2-ethylsulfonylethyl) phosphorodithioate	3.800 ug/L	104% Rec (ML)	21.70 % RSD (ML)	10.00 ug/L
Ethion(563-12-2) Bladan Diethion Ethion Ethodan Ethyl methylene phosphorodithioate Nialate O,O,O',O'-Tetraethyl S,S'-methylene bis( ... Tetraethyl S,S'-methylene bis(phosphorodithioate), O ... bis(S-(Diethoxyphosphinothioyl)mercapto)methane	0.250 ug/L	86% Rec (ML)	18.70 % RSD (ML)	2.00 ug/L
Ethoprophos(13194-48-4) Ethoprop Ethoprophos Ethyl-s,s-dipropylphosphorodithioate,o- Mocap O-Ethyl S,S-dipropylphosphorodithioate Phosphorodithioic acid, O-ethyl S,S-dipropyl ester	0.190 ug/L	92% Rec (ML)	20.20 % RSD (ML)	2.00 ug/L
Fenamiphos(22224-92-6) Ethyl 4-(methylthio)-m-tolyl isopropylphosphoramidate Fenamiphos Fenamiphos(nemacur) Nemacur Phenamiphos	1.000 ug/L	90% Rec (ML)	19.50 % RSD (ML)	20.00 ug/L
Fenarimol(60168-88-9) 5-Pyrimidinemethanol, .alpha.-(2-chlorophenyl) 5-Pyrimidinemethanol, .alpha.-(2-chlorophenyl)-. ... Fenarimol Fenarimol (.alpha.-(2-Chlorophenyl)-.alpha.-4- ... Fenarimol (ANSI) Rimidin Rubigan Rubigon alpha-(2-chlorophenyl)-alpha-(4-chlorophenyl)-5- ...	0.380 ug/L	97% Rec (ML)	22.40 % RSD (ML)	5.00 ug/L
Fluridone(59756-60-4) 1-Methyl-3-phenyl-5-(3-(trifluoromethyl)phenyl)-4(1H ... 4(1H)-Pyridinone, 1-methyl-3-phenyl-5-[3-(trif 4(1H)-Pyridinone, 1-methyl-3-phenyl-5-[3-(trifluoro ... Fluridone Fluridone (ANSI) Sonar	3.800 ug/L	102% Rec (ML)	24.20 % RSD (ML)	10.00 ug/L
Herbicides(E-12839) Herbicide formulations Herbicides	N/A	N/A	N/A
Hexazinone(51235-04-2) 1,3,5-Triazine-2,4(1H,3H)-dione, 3-cyclohexyl- 1,3,5-Triazine-2,4(1H,3H)-dione, 3-cyclohexyl-6-(di ... 3-Cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5- ... 3-Cyclohexyl-6-(dimethylamino)-1-methyl-s-tria 3-Cyclohexyl-6-(dimethylamino)-1-methyl-s-triazine-2 ... Cyclohexyl-6-(dimethylamino)-1-methyl-1,3,5-triazine ... Cyclohexyl-6-(dimethylamino)-1-methyl-s-triazine-2,4 ... Hexazinone Velpar	0.760 ug/L	99% Rec (ML)	21.30 % RSD (ML)	5.00 ug/L
MGK 264(113-48-4) Carboximide MGK 264 N-(2-Ethylhexyl)-5-norbornene-2,3-dicarboximide N-(2-ethylhexyl)-8,9,10-trinorborn-5-ene-2,3- ... Octacide 264 Octylbicycloheptenedicarboximide Van dyke 264 n-Octyl bicycloheptene dicarboximide	0.500 ug/L	93% Rec (ML)	18.00 % RSD (ML)	10.00 ug/L
Merphos(150-50-5) Deleaf defoliant Folex 6EC Merphos Phosphorotrithious acid, tributyl ester Phosphorotritious acid, tributyl ester S,S,S-Tributyl trithiophosphite S,S,S-Tributylphosphotrithioate Tribuphos Tributyl phosphorotrithioite	0.250 ug/L	50% Rec (ML)	36.40 % RSD (ML)	10.00 ug/L
Methylparaoxon(950-35-6) Desmethylnitrophos Dimethyl p-nitrophenyl phosphate Methyl parathion oxon Methylparaoxon Paraoxon methyl Parathion methyl oxygen analog	2.500 ug/L	100% Rec (ML)	17.20 % RSD (ML)	10.00 ug/L
Metolachlor(51218-45-2) 2-Chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-4- ... 2-Chloro-N-(6-ethyl-o-tolyl)-N-(2-methoxy-1- ... 2-chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)-o- ... Acetamide, 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2- ... Codal Cycle Dual Metelilachlor Metolachlor Metolachlor (ANSI)	0.750 ug/L	93% Rec (ML)	13.20 % RSD (ML)	10.00 ug/L
Metribuzin(21087-64-9) 4-Amino-6-(1,1-dimethylethyl)-3-(methylthio)-1 Bay 94337 Lexone Metribuzin Sencoral Sencorer	0.150 ug/L	97% Rec (ML)	19.80 % RSD (ML)	2.00 ug/L
Mevinphos(7786-34-7) 2-Butenoic acid, 3-[(dimethoxy-phosphinyl)oxy] 2-Butenoic acid, 3-[(dimethoxy-phosphinyl)oxy]-, ... Carbomethoxy-1-methylvinyl dimethyl phosphate, alpha ... Crotonic acid, 3-hydroxy-, methyl ester, dimethyl ... Crotonic acid, 3-hydroxy-, methyl ester,dimeth Dimethyl methoxycarbonylpropenyl phosphate Fosdrin Methyl-3-(dimethoxyphosphinyloxy)crotonate Mevinphos Phosdrin Phosfene	5.000 ug/L	97% Rec (ML)	13.20 % RSD (ML)	10.00 ug/L
Molinate(2212-67-1) 1H-Azepine-1-carbothioic acid, hexahydro-, S-e 1H-Azepine-1-carbothioic acid, hexahydro-, S-ethyl ester Ethyl-1-hexamethyleneiminecarbothiolate Hexahydro-1h-azepine-1-carbothioic acid, s-ethyl ester Hydram Jalan Molinate Ordram S-Ethyl hexahydroazepine-1-carbothioate S-ethyl hexahydro-1h-azepine-1-carbothioate Yalan	0.150 ug/L	94% Rec (ML)	18.20 % RSD (ML)	2.00 ug/L
Napropamide(15299-99-7) 2-(alpha-Naphthoxy)-N,N-diethylpropionamide Devrinol Diethylpropionamide,2-(1-naphthyloxy)-n,n- Diethylpropionamide,2-(alpha-naphthoxy)-n,n- N,N-Diethyl-2-(1-naphthalenyloxy)propanamide N,N-Diethyl-2-(1-naphthalenyloxy)propionamide N,n-diethyl-2-(1-naphthyloxy)propionamide Napropamide Propanamide, N,N-diethyl-2-(1-naphthalenyloxy) Propanamide, N,N-diethyl-2-(1-naphthalenyloxy)-	0.250 ug/L	87% Rec (ML)	15.70 % RSD (ML)	5.00 ug/L
Norflurazon(27314-13-2) 3(2H)-Pyridazinone, 4-chloro-5-(methylamino)-2 Norflurazon Telok	0.500 ug/L	96% Rec (ML)	24.80 % RSD (ML)	5.00 ug/L
Organophosphate pesticides(E-12873) Organophosphate pesticides Organophosphorus pesticides Pesticides, organophosphate	N/A	N/A	N/A
Oxydisulfoton(2497-07-6) Disulfoton sulfoxide Disyston sulphoxide O,O-Diethyl S-(2-(ethylsulfinyl)ethyl) ... Oxydisulfoton	0.380 ug/L	95% Rec (ML)	19.50 % RSD (ML)	10.00 ug/L
Pebulate(1114-71-2) Butylethylcarbamothioic acid S-propyl ester Carbamothioic acid, butylethyl-, S-propyl este Carbamothioic acid, butylethyl-, S-propyl ester PEBC Pebulate Propylethylbutylthiocarbamate S-Propylbutylethylthiocarbamate Tillam	0.130 ug/L	89% Rec (ML)	21.80 % RSD (ML)	2.00 ug/L
Prometon(1610-18-0) 2,4-bis(Isopropylamino)-6-methoxy-S-triazine 2,4-bis(Isopropylamino)-6-methoxy-sym-triazine 2,6-Diisopropylamino-4-methoxytriazine Gesafram 50 Methoxypropazine Pramitol Prometon Prometon (ANSI) Prometon(pramitol) Prometone	0.300 ug/L	96% Rec (ML)	17.20 % RSD (ML)	2.00 ug/L
Pronamide(23950-58-5) 3,5-Dichloro-N-(1,1-dimethyl-2-propynyl)benzam 3,5-Dichloro-N-(1,1-dimethyl-2-propynyl)benzamide Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-prop Benzamide, 3,5-dichloro-N-(1,1-dimethyl-2-propynyl)- Kerb Promamide Pronamide Propyzamide	0.760 ug/L	97% Rec (ML)	15.20 % RSD (ML)	10.00 ug/L
Propazine(139-40-2) 1,3,5-Triazine-2,4-diamine, 6-chloro-N,N'-bis( 2-Chloro-4,6-bis(isopropylamino)-S-triazine Chloro-4,6-bis(isopropylamino)-sym-triazine,2- Gesamil Milocep Milogard Primatol P Propasin Propazine Propazine (ANSI)	0.130 ug/L	93% Rec (ML)	17.20 % RSD (ML)	2.00 ug/L
Simazine(122-34-9) 1,3,5-Triazine-2,4-diamine, 6-chloro-N,N'-diethyl- 2,4-bis(Ethylamino)-6-chloro-s-triazine 2-Chloro-4,6-bis(ethylamino)-1,3,5-triazine 2-Chloro-4,6-bis(ethylamino)-S-triazine 6-Chloro-N,N'-diethyl-1,3,5-triazine-2,4-diami 6-Chloro-N,N'-diethyl-1,3,5-triazine-2,4-diamine Aquazine Princep Radocon S-Triazine,2-chloro-4,6-bis(ethylamino)- Simadex, Simanex, Simazine (ANSI) Simazine	0.075 ug/L	95% Rec (ML)	14.60 % RSD (ML)	2.00 ug/L
Simetryn(1014-70-6) 1,3,5-Triazine-2,4-diamine, N,N'-diethyl-6-(me 1,3,5-Triazine-2,4-diamine, N,N'-diethyl-6-(methylthio)- 2,4-Bis(ethylamino)-6-(methylthio)-s-triazine 2,4-bis(Ethylamino)-6-methylmercapto-s-triazine Simetryn	0.250 ug/L	96% Rec (ML)	18.00 % RSD (ML)	2.00 ug/L
Tebuthiuron(34014-18-1) Brulan Graslan Perflan Spike Tebuthiuron Tebuthiuron (graslan) Terbuthiuron Urea, N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazo	1.300 ug/L	97% Rec (ML)	18.40 % RSD (ML)	10.00 ug/L
Terbacil(5902-51-2) 2,4(1H,3H)-Pyrimidinedione, 5-chloro-3-(1,1-di 2,4(1H,3H)-Pyrimidinedione, 5-chloro-3-(1,1-dimethyl ... 3-tert-Butyl-5-chloro-6-methyluracil 3-tert-Butyl-s-chloro-6-methyluracil 5-Chloro-3-(1,1-dimethylethyl)-6-methyl- 2 ... Geonter Sinbar Terbacil Turbacil	4.500 ug/L	100% Rec (ML)	18.80 % RSD (ML)	50.00 ug/L
Terbufos(13071-79-9) Counter Terbufos	0.500 ug/L	83% Rec (ML)	18.10 % RSD (ML)	10.00 ug/L
Terbutryn(886-50-0) 1,3,5-Triazine-2,4-diamine, N-(1,1-dimethyleth 1,3,5-Triazine-2,4-diamine, N-(1,1-dimethylethyl)-N' ... 2-tert-Butylamino-4-ethylamino-6-methylthio-s-triazine 2-tert-Butylamino-4-ethylamino-6-methylthio-sym-triazine Butylamino-4-ethylamino-6-methylthio-S-triazine, 2-tert- Clarosan Igran Prebane Short-stop Shortstop Terbutryn Terbutryn (ANSI) Terbutryne	0.250 ug/L	95% Rec (ML)	12.80 % RSD (ML)	2.00 ug/L
Tetrachlorvinphos(22248-79-9) 2-Chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl ... Appex CVMP Gardcide Gardona Gardona Gardona (cis-isomer) Phosphoric acid, 2-chloro-1-(2,4,5-trichloroph Phosphoric acid, 2-chloro-1-(2,4,5-trichlorophenyl) ... Rabon Rabon Rabond Shell SD 8447 Stirofos Stirofos Stirophos Tetrachlorovinphos Tetrachlorvinphos Tetrachlorvinphos Tetrachlorvinphos ( (Z)-isomer ) Tetrachlorvinphos [phosphoric acid, 2-chloro-1-(2,4, ...	0.760 ug/L	93% Rec (ML)	20.90 % RSD (ML)	20.00 ug/L
Triadimefon(43121-43-3) 1-(4-Chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol ... 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-t 2-Butanone, 1-(4-chlorophenoxy)-3,3-dimethyl-1 2-Butanone, 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1 ... Amiral Bayleton Butanone,1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4- ... Chlorophenoxy)-3,3-dimethyl-1-(1h-1,2,4-triazol-1-yl ... Rofon Triadimefon	0.650 ug/L	98% Rec (ML)	20.30 % RSD (ML)	2.00 ug/L
Tricyclazole(41814-78-2) 1,2,4-Triazolo[3,4-b]benzothiazole, 5-methyl- 5-Methyl-1,2,4-triazolo[3,4-b]-benzothiazole Beam S-triazolo(3,4-b)benzothiazole, 5-methyl- Tricyclazole	1.000 ug/L	91% Rec (ML)	16.30 % RSD (ML)	20.00 ug/L
Vernolate(1929-77-7) Carbamothioic acid, dipropyl-, S-propyl ester PPTC Propyl-n,n-dipropylthiocarbamate S-Propyl dipropylthiocarbamate S-Propyldipropylthiocarbamate Vernam Vernolate	0.130 ug/L	81% Rec (ML)	25.40 % RSD (ML)	2.00 ug/L
bis(2-Chloroethyl) ether(111-44-4) 1,1'-Oxybis(2-chloro-ethane) 2,2'-Dichlorodiethyl ether 2,2'-Dichloroethyl ether BCEE Chlorex Dichloroethyl ether Dichloroethyl ether,beta,beta'- Ethane, 1,1'-oxybis[2-chloro- Ether, bis(2-chloroethyl) bis(2-Chloroethyl) ether sym-Dichloroethyl ether	0.600 ug/L	94% Rec (ML)	17.30 % RSD (ML)	5.00 ug/L

Precision Descriptor Notes:	Ten laboratories participated in the study. Two samples, different in concentration of the 45 analytes, were analyzed as Youden pairs at each of 3 levels to provide data for estimating single-analyst precision. Analyses of the spiked reagent water evaluated the proficiency of the test method on a sample free of interferences. Analyses of the spiked finished drinking waters were intended to demonstrate the suitability of the test method on a regulated matrix and to compare the results with those of reagent water.
Detection Level Note:	None.

Precision Descriptor Notes:

Ten laboratories participated in the study. Two samples, different in concentration of the 45 analytes, were analyzed as Youden pairs at each of 3 levels to provide data for estimating single-analyst precision. Analyses of the spiked reagent water evaluated the proficiency of the test method on a sample free of interferences. Analyses of the spiked finished drinking waters were intended to demonstrate the suitability of the test method on a regulated matrix and to compare the results with those of reagent water.

Detection Level Note:

None.

Revision	PDF/Link
Reapproved 1997. Current edition approved Dec. 15, 1993. Published March 1994.

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ASTM: D5475: Nitrogen and Phosphorus-Containing Pesticides

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