Pcb 204
The PCB 204 is a laboratory equipment designed for the analysis and identification of organic compounds. It is a high-performance liquid chromatography (HPLC) system that utilizes a photodiode array detector to provide detailed spectral data on sample components.
Lab products found in correlation
3 protocols using pcb 204
Synthesis and Characterization of Halogenated Biphenyl Metabolites
Synthesis and Separation of PCB 136 Atropisomers
dibasic (Na2HPO4), sodium phosphate monobasic
(NaH2PO4), magnesium chloride (MgCl2), tetrabutylammonium sulfite, sodium sulfite, and pesticide grade
solvents were obtained from Fisher Scientific (Pittsburgh, PA, USA).
Nicotinamide adenine dinucleotide phosphate reduced (NADPH) was purchased
from Sigma-Aldrich Co. (St. Louis, MO, USA). Racemic PCB 136 was synthesized
by the Ullmann coupling of 2,3,6-trichloro-1-iodobenzene,28 and the atropisomers of PCB 136 were separated
using two serially connected Nucleodex β-PM columns (Macherey-Nagel,
Düren, Germany). The enantiomeric fractions (EF = Area(+)-PCB 136 /(Area(+)-PCB 136 + Area(−)-PCB 136)) of (−)-PCB
136 and (+)-PCB 136 were 0.01 and 1.00, respectively.27 (link) 2,2′,3,3′,6,6′-Hexachlorobiphenyl-4-ol
(4–136), 2,2′,3,3′,6,6′-hexachlorobiphenyl-5-ol
(5–136), 4,5-dimethoxy-2,2′,3,3′,6,6′-hexachlorobiphenyl,
and 2,2′,3′,4,6,6′-hexachloro-3-methoxybiphenyl
were prepared as described elsewhere.29 (link) Recovery standards (2,3,4,4′,5,6-hexachlorobiphenyl, PCB
166; 2,3,4′,5,6-pentachlorobiphenyl, PCB 117; 2,3,3′,4,5,5′-hexachlorobiphenyl-4-ol,
4′-159) and the internal standard (2,2′,3,4,4′,5,6,6′-octachlorobiphenyl,
PCB 204) were purchased from Accustandard (New Haven, CT).
Comprehensive PCB Standard Solution Composition
PCB standard solution
can be found in
PCB standard solution was composed of (i) 209 PCB congeners (AccuStandard,
New Haven, CT, USA); (ii) 10 13C-PCB surrogate standards
(mono- to deca-chlorinated; Wellington Laboratories, Guelph, ON, Canada);
and (iii) d5-PCB30 (Cambridge Isotope Laboratories, Andover,
MA, USA), which is used as an internal standard together with PCB204
(AccuStandard). PCB congener names are in accordance with the United
States Environmental Protection Agency (US EPA).44
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