Pesticide Testing Lab - Organochlorine Pesticides & PCBs

Organochlorine Pesticides are chlorinated hydrocarbons that were used extensively from the 1940s-1960s for pest and insect control. The group includes DDT, methoxychlor, dieldrin, chlordane, toxaphene, mirex, kepone, lindane, and benzene hexachloride.  Many organochlorine pesticides have been banned in the United States, although a few are still registered for use in this country. Organochlorine pesticides accumulate in the environment and move long distances in surface runoff or groundwater.

 

PCBs (polychlorinated biphenyls) are man-made organic chemicals that were widely used from the 1930s until they were banned in the late ’70s. Until then, PCBs were already entering the environment by their manufacture and general use, but today, improper disposal, product leaks, and the burning of debris containing PCBs all continue to contribute to the levels found in air, water and soil. Once in the environment, PCBs may remain for long periods of time and have been known to travel long distances, as they do not readily break down.

 

The concentrations of organochlorine pesticides and polychlorinated biphenyls (PCB) are determined by extracting the sample then analyzing the extract using gas chromatography (GC).  The GC is configured with a dual capillary column configuration using electron capture detectors (ECD).  Each column is made using different film materials which gives the ability to confirm the presence of any detected compounds.

 

Method 8081 (Pesticides) and 8082 (PCBs) methods are normally used when analyzing surface and ground water as well as solid sample matrices. Method 608 includes both Pesticides and PCBs, and is used for wastewater samples. 

 

The following sample prep methods are commonly used: 3510, 3546, 35XX. If you have a regulated site, and the potential for a large quantity of soil samples, chances are very good that we can save you both time and money with an EPA-approved subpart-Q study. For more information, contact us.


The following Pesticides are commonly reported:

4,4'-DDD
4,4'-DDE
4,4'-DDT
Aldrin
alpha-BHC
alpha-Chlordane
beta-BHC
delta-BHC
Dieldrin
Endosulfan I
Endosulfan II
Endosulfan Sulfate
Endrin
Endrin Aldehyde
Endrin Ketone
gamma-BHC (Lindane)
gamma-Chlordane
Heptachlor
Heptachlor Epoxide
Methoxychlor
Toxaphene


The following PCB Aroclors are commonly reported:


PCB-1016
PCB-1221
PCB-1232
PCB-1242
PCB-1248
PCB-1254
PCB-1260
PCB-1262
PCB-1268


The following PCB congeners are TYPICALLY reported:


2,4'-dichlorobiphenyl BZ# 8
2,2',5-trichlorobiphenyl BZ# 18
2,4,4'-trichlorobiphenyl BZ# 28
2,2',3,5'-tetrachlorobiphenyl BZ# 44
2,2',4',5-tetrachlorobiphenyl BZ# 49
2,2',5,5'-tetrachlorobiphenyl BZ# 52
2,3',4,4'-tetrachlorobiphenyl BZ# 66
2,2',3,4,5'-pentachlorobiphenyl BZ# 87
2,2',4,5,5'-pentachlorobiphenyl BZ# 101
2,3,3',4,4'-pentachlorobiphenyl BZ# 105
2,3',4,4',5-pentachlorobiphenyl BZ# 118
2,2',3,3',4,4'-hexachlorobiphenyl BZ# 128
2,2',3,4,4',5'-hexachlorobiphenyl BZ# 138
2,2',4,4',5,5'-hexachlorobiphenyl BZ# 153
2,2',3,3',4,4',5-heptachlorobiphenyl BZ# 170
2,2',3,4,4',5,5'-heptachlorobiphenyl BZ# 180
2,2',3,4,4',5',6-heptachlorobiphenyl BZ# 183
2,2',3,4,4',6,6'-heptachlorobiphenyl BZ# 184
2,2',3,4',5,5',6-heptachlorobiphenyl BZ# 187
2,2',3,3',4,4',5,6-octachlorobiphenyl BZ# 195
2,2',3,3',4,4',5,5',6-nonachlorobiphenyl BZ# 206
2,2',3,3',4,4',5,5',6,6'-decachlorobiphenyl BZ# 209

 

Contact us if you are interested in a customized target list.

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