Method Description Sheet

Method EPA Method 525.2
Title DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATERBY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUNNGAS CHROMATOGRAPHY/MASS SPECTROMETRY
Abstract Organic compound analytes, internal standards, and surrogates are extracted from a water sample by passing 1 liter of sample water through a cartridge containing about 1 gram of a solid inorganic matrix coated with a chemically bonded Cl8 organic phase (liquid-solid extraction, LSE). The organic compounds are eluted from the LSE cartridge with a small quantity of methylene chloride, and concentrated further by evaporation of some of the solvent. The sample components are separated, identified, and measured by injecting an aliquot of the concentrated methylene chloride extract into a high resolution fused silica capillary column of a gas chromatography/mass spectrometry (GC/MS) system. Compounds eluting from the GC column are identified by comparing their measured mass spectra and retention times to reference spectra and retention times in a data base. Reference spectra and retention times for analytes are obtained by the measurement of calibration standards under the same conditions used for samples. The concentration of each identified component is measured by relating the MS response of the quantitation ion produced by that compound to the MS response of the quantitation ion produced by a compound that is used as an internal standard. Surrogate analytes, whose concentrations are known in every sample, are measured with the same internal standard calibration procedure.

Compounds Analyzed :

Selecting a CAS number from the table below will direct you to the
National Library of Medicine's Hazardous Substances Database for more details on the compound.

CAS #Compound Name
208-96-8 Acenaphthylene
15972-60-8Alachlor
309-00-2 Aldrin
120-12-7Anthracene
1912-24-9Atrazine
56-55-3 Benz[a]anthracene
205-99-2Benzo[b]fluoranthene
207-08-9Benzo[k]fluoranthene
50-32-8 Benzo[a]pyrene
191-24-2Benzo[g,h,i]perylene
85-68-7 Butylbenzylphthalate
5103-71-9Alpha-chlordane
5103-74-2Gamma-chlordane
39765-80-5Trans nonachlor
2051-60-7 2-Chlorobiphenyl
218-01-9 Chrysene
53-70-3 Dibenz[a,h]anthracene
84-74-2Di-n-butylphthalate
16605-91-7 2,3-Dichlorobiphenyl
84-66-2Diethylphthalate
103-23-1 Di(2-ethylhexyl)adipate
117-81-7 Di(2-ethylhexyl)phthalate
131-11-3Dimethylphthalate
72-20-8 Endrin
86-73-7Fluorene
76-44-8Heptachlor
1024-57-3Heptachlor epoxide
52663-71-52,2',3,3',4,4',6-Heptachlorobiphenyl
118-74-1 Hexachlorobenzene
60145-22-42,2',4,4',5,6'-Hexachlorobiphenyl
77-47-4 Hexachlorocyclopentadiene
193-39-5Indeno[1,2,3,c,d]pyrene
58-89-9 Lindane
72-43-5Methoxychlor
40186-71-82,2',3,3',4,5',6,6'-Octachlorobiphenyl
60233-25-22,2',3',4,6-Pentachlorobiphenyl
87-86-5 Pentachlorophenol
85-01-8Phenanthrene
129-00-0Pyrene
122-34-9Simazine
2437-79-82,2',4,4'-Tetrachlorobiphenyl
8001-35-2Toxaphene mixture
15862-07-42,4,5-Trichlorobiphenyl
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