Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses

Krupčík, J.; Kočan, Anton; Petrı́k, Ján; Leclercq, PA Piet; Ballschmiter, Karlheinz

doi:10.1007/bf02278595

Cited by 8 publications

(2 citation statements)

References 8 publications

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“…In particular, the correction factor for the dichlorinated biphenyls was the average one determined for PCB-5 and PCB-12, that for the trichlorinated biphenyls was calculated via averaging of the values for PCB-29, PCB-30, and PCB-28, and finally those for tetra-and pentachlorinated biphenyls were taken equal to those determined for PCB-52 and PCB-101, respectively. Such assumption was in line with the available reference data [11] stating that the correction factors to be applied for processing of gas chromatography data were practically the equal for the chlorinated biphenyls with the same number of chlorine atoms in the molecule. The content of congeners of each group was calculated as follows.…”

supporting

confidence: 65%

Investigation of polychlorinated biphenyls congeners in the Trikhlorbifenil technical mixture

et al. 2015

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supporting

confidence: 65%

Investigation of polychlorinated biphenyls congeners in the Trikhlorbifenil technical mixture

et al. 2015

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“…Fractions of di-through tetra-ortho substituted PCBs and mono-ortho substituted PCBs from carbon chromatography were analyzed by high-resolution capillary gas chromatography with an electron capture detector (GC/ECD) to quantitate 66 discrete congeners and 20 combined congener peaks. Identification and quantification of PCB congeners were done with mixed Aroclor standards (23,25,26). Mono-ortho PCBs were identified and quantified using individual standards (23).…”

Section: Methodsmentioning

confidence: 99%

Comparing Polychlorinated Biphenyl Concentrations and Patterns in the Saginaw River Using Sediment, Caged Fish, and Semipermeable Membrane Devices

Echols

Gale

Schwartz

et al. 2000

Environ. Sci. Technol.

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Three techniques of assessing bioavailable polychlorinated biphenyls (PCBs) in the Saginaw River, MI, were compared: sediments, caged fish, and semipermeable membrane devices (SPMDs). SPMDs and caged fish were placed in the river for 28 days at five sites where sediments were also sampled. The samples were analyzed for PCB congeners to determine concentrations and patterns. Total PCB concentrations ranged from 33 to 280 ng/g (dry weight) in sediments, 46 to 290 ng/g (wet weight) in caged fish, and 77 to 790 ng/g in SPMDs. Previously reported rates of PCB accumulation by SPMDs were used to estimate aqueous concentrations from the PCB concentrations detected in the SPMDs. Sediment-water partition coefficients were used to estimate aqueous PCB concentrations from sediment. Steady-state bioconcentration factors and depuration rate constants were used to estimate dissolved PCB concentrations from caged channel catfish. Relative PCB patterns from the SPMDs, caged fish, and sediment were compared using principal components analysis. SPMD and sediment samples provide complementary information. Sediments reflect long-term accumulation and weathering, while SPMDs integrate water concentrations only during the sampling period. Because of higher water solubilities of lower-chlorinated PCBs these predominate in the SPMDs as compared to in the fish and sediments. Contaminant profile differences between caged fish and SPMDs are likely due to metabolism and depuration of certain PCB congeners by fish.

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Distribution of Pesticides, PAHs, PCBs, and Bioavailable Metals in Depositional Sediments of the Lower Missouri River, USA

Echols

Brumbaugh

Orazio

et al. 2008

Arch Environ Contam Toxicol

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The lower Missouri River was studied to determine the distribution of selected persistent organic pollutants and bioavailable metals in depositional sediments. Nineteen sites between Omaha, Nebraska and Jefferson City, Missouri were sampled. This stretch of the river receives point-source and non-point-source inputs from industrial, urban, and agricultural activities. As part of an ecological assessment of the river, concentrations of 29 legacy organochlorine pesticides (OC pesticides), including chlordanes, DDTs, and hexachlorocyclohexanes; a select list of current-use pesticides, including trifluralin, diazinon, chlorpyrifos, and permethrin, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), divalent metals (copper, nickel, zinc, cadmium, and lead), and polybrominated diphenyl ethers (PBDEs) were determined. Concentrations (dry weight basis) of OC pesticides in the sediments were less than 1 ng/g, with the exception of the backwater sediment collected from the mouth of the Blue River in the Kansas City metropolitan area, which contained up to 20 ng/g total chlordane, 8.1 ng/g p,p'-DDE, 1.5 ng/g lindane, 4.8 ng/g dieldrin, and 3 ng/g endrin. Concentrations of chlorpyrifos and permethrin ranged from less than 1 ng/g to 5.5 ng/g and 44 ng/g, respectively. Concentrations of PCBs ranged from less than 11 ng/g to 250 ng/g, with the Blue River and Sibley sediments containing 100 and 250 ng/g total PCBs, respectively. Concentrations of total PAHs at 17 of the 19 sites ranged from 250 to 700 ng/g, whereas the Riverfront and Blue River sites in Kansas City contained 1100 ng/g and nearly 4000 ng/g, respectively. Concentrations of the metals did not vary significantly among most sites; however, the Blue River site contained elevated concentrations of zinc (104 microg/g), cadmium (0.7 microg/g), and lead (34 microg/g) compared to the other sites. The moderately high concentrations of acid-volatile sulfide in the sediments suggest a low potential for metal toxicity to benthic organisms along this reach of the Missouri River. The depositional area sediments contained concentrations of the targeted persistent organic chemicals and metals that were below published probable effect level concentrations.

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Reference standards for quantitative trace analysis of PCB's by GC. Technical PCB formulations for the calibration of ECD and MSD responses

Cited by 8 publications

References 8 publications

Investigation of polychlorinated biphenyls congeners in the Trikhlorbifenil technical mixture

Investigation of polychlorinated biphenyls congeners in the Trikhlorbifenil technical mixture

Comparing Polychlorinated Biphenyl Concentrations and Patterns in the Saginaw River Using Sediment, Caged Fish, and Semipermeable Membrane Devices

Distribution of Pesticides, PAHs, PCBs, and Bioavailable Metals in Depositional Sediments of the Lower Missouri River, USA

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