New EPA 500 Series Methods
 
Method 535 Acetanilide/Acetamide Herbicides NEW
Method 521 Nitrosamines
Method 527 Pesticides & Flame Retardants
Method 529 Explosives & Related Compounds
 
Method 535 Acetanilide/Acetamide Herbicides
Over the past several years, ethanesulfonic acid (ESA) and oxanilic acid (OA) degradation products of acetanilide/acetamide herbicides have been found in U.S. ground waters and surface waters. The substitution of the sulfonic acid or the carbonic acid for the chlorine atom greatly increases the water solubility of degradates relative to the parent compound and contributes to the increased potential for leaching into groundwater. As a result, alachlor ESA and other acetanilide degradation products were listed on the 1998 Safe Drinking Water Act Contaminant Candidate List (CCL). One acetamide and five acetanilide herbicides are currently registered for agricultural use in the U.S. The next step in the CCL-process is to collect data on the concentrations and occurrence of these compounds in the nation's drinking water supplies. However, the existing analytical methods for measuring chloroacetanilide degradates do not address issues specific to analyzing these compounds in drinking water. Because many of the methods were developed for ground water, dechlorination was not addressed nor was the method tested in all types of drinking water matrices. In addition, existing methods do not address all twelve ESA and OA degradates of the six U.S. registered acetanilide/acetamide herbicides. The focus of this research was to develop a sensitive and specific analytical method for the analysis of alachlor ESA and other chloroacetanilide degradates in drinking water. 1
1 Source: http://www.epa.gov/nerl/research/2004/g2-5.html
Method 535 Acetanilide/Acetamide Herbicides SET
M-535-SET   14 x 1 mL (including IS and SS)
Propachlor OA @ 20 µg/mL in MeOH   Flufenacet OA @ 20 µg/mL in MeOH
Propachlor ESA @ 20 µg/mL in MeOH   Flufenacet ESA @ 20 µg/mL in MeOH
Acetochlor OA @ 50 µg/mL in MeOH   Metolachlor OA @ 50 µg/mL in MeOH
Acetochlor ESA @ 50 µg/mL in MeOH   Metolachlor ESA @ 50 µg/mL in MeOH
Alachlor OA @ 50 µg/mL in MeOH   Dimethenamid OA @ 10 µg/mL in MeOH
Alachlor ESA @ 50 µg/mL in MeOH   Dimethenamid ESA @ 10 µg/mL in MeOH
Butachlor ESA sodium salt (Internal Standard) @ 20 µg/mL in MeOH
Dimethachlor ESA sodium salt (Surrogate Standard) @ 20 µg/mL in MeOH
     
Method 521 Nitrosamines by SPE & Capillary Column GC
     
Analyte Stock Solution   Internal Standard Stock Solution
M-521
1 x 1 mL
   M-521-IS
1 x 1 mL
200 µg/mL each in CH2Cl2
7 comps.
  M-521-IS-PAK
5 x 1 mL
      1.0 mg/mL each in CH2Cl2
N-Nitrosodimethylamine    
N-Nitrosomethylethylamine     N-Nitrosodi-n-propylamine-d14
N-Nitrosodiethylamine      
N-Nitrosodi-n-propylamine     Surrogate Standard Stock Solution
N-Nitrosodi-n-butylamine     M-521-SS
1 x 1 mL
N-Nitrosopyrrolidine     M-521-SS-PAK
5 x 1 mL
N-Nitrosopiperidine     1.0 mg/mL each in CH2Cl2
     
      N-Nitrosodimethylamine-d6
     
Method 527 Pesticide and Flame Retardants in Drinking Water by SPE & Capillary Column GC/MS

 
PBDE Standard   Pesticide Standard A
M-527-BDE
1 x 1 mL
   M-527-PEST-A
1 x 1 mL
50 µg/mL each in Isooctane:Ethyl acetate (8:2)
5 comps.
   500 µg/mL each in MeOH
11 comps.
         
2,2’,4,4’-Tetrabromodiphenyl ether   Atrazine Kepone
2,2’,4,4’,6-Pentabromodiphenyl ether   Bioallethrin, S-cyclopentyl isomer Norflurazon
2,2’,4,4’,5-Pentabromodiphenyl ether   Bromacil Oxychlordane isomer
2,2’,4,4’,5,5'-Hexabromodiphenyl ether   Esfenvalerate Prometryne
2,2',4,4',5,5'-Hexabromobiphenyl   Fenvalerate Propazine
      Hexazinone  
Note: This is the working level product of S-10617C-R1    
     
Internal Standard Pesticide Standard B
M-525.2-IS
1 x 1 mL
   M-527-PEST-B
1 x 1 mL
0.5 mg/mL each in Acetone
3 comps.
   500 µg/mL each in MeOH
11 comps.
         
Acenapthene-d10 Phenanthrene-d10   Bifenthrin Nitrofen
Chrysene-d12     Dimethoate Parathion
      Dursban Terbufos sulfone
Surrogate Standard Fenamiphos Thiazopyr
M-525.2-SS
1 x 1 mL
   Malathion Thiobencarb
0.5 mg/mL each in Acetone
3 comps.
   Mirex Vinclozolin
         
1,3-Dimethyl-2-nitrobenzene Triphenylphosphate      
Perylene-d12        
         
Method 529 Explosive & Related Compounds by SPE & Capillary Column GC/MS
 
Method 529 Calibration Curve
All in Ethyl acetate
M-529- 01 02 03 04 05 06 07 08 09
2-Amino-4,6-dinitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
4-Amino-2,6-dinitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
3,5-Dinitroaniline 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
1,3-Dinitrobenzene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
2,4-Dinitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
2,6-Dinitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
RDX 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
Nitrobenzene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
2-Nitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
3-Nitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
4-Nitrotoluene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
1,3,5-Trinitrobenzene 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
Tetryl 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
TNT 0.025 0.05 0.10 0.25 0.50 1.0 2.0 5.0 10
                   
Full Scan MS Calibration Set
M-529-MS-SET 6 x 1 mL M-529-03, M-529-05, M-529-06,M-529-07, M-529-08, M-529-09
SIM Calibration Set
M-529-SIM-SET 7 x 1 mL M-529-01, M-529-02, M-529-03, M-529-04,M-529-05, M-529-06, M-529-07
                   
Internal Standard Stock Solution   Surrogate Analyte Stock Solutions
M-529-IS
1 x 1 mL
   M-529-SS1
1 x 1 mL
2.0 mg/mL in Ethyl acetate
  M-529-SS1-PAK
5 x 1 mL
      1000 µg/mL each in MeOH
2 comps.
3,4-Dinitrololuene    
      1,3,5-Trimethyl-2-nitrobenzene
Internal Standard Fortification Solution   1,2,4-Trimethyl-5-nitrobenzene
M-529-ISFS
1 x 1 mL
      
200 µg/mL in Ethyl acetate
14 comps.
  M-529-SS2
1 x 1 mL
      M-529-SS2-PAK
5 x 1 mL
2-Amino-4,6-dinitrotoluene Nitrobenzene   1000 µg/mL each in CH2Cl2
4-Amino-2,6-dinitrotoluene 2-Nitrotoluene  
3,5-Dinitroaniline 3-Nitrotoluene   Nitrobenzene-d5
1,3-Dinitrobenzene 4-Nitrotoluene      
2,4-Dinitrotoluene 1,3,5-Trinitrobenzene   Surrogate Analyte Fortification Solution
2,6-Dinitrotoluene Tetryl   M-529-SAFS
1 x 1 mL
RDX TNT   M-521-SAFS-PAK
5 x 1 mL
      100 µg/mL each in MeOH
3 comps
     
      1,3,5-Trimethyl-2-nitrobenzene
      1,2,4-Trimethyl-5-nitrobenzene  
      Nitrobenzene-d5  
         


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