Method Description Sheet

Method EPA Method 555
Title DETERMINATION OF CHLORINATED ACIDS IN WATER BY HIGHPERFORMANCE LIQUID CHROMATOGRAPHY WITH A PHOTODIODE ARRAYULTRAVIOLET DETECTOR
Abstract A measured sample volume of approximately 100 mL is adjusted to pH 12 with 6 N sodium hydroxide, shaken, and allowed to set for 1 hr to hydrolyze chlorinated esters. The sample is acidified with H3PO4, filtered, and the chlorinated acids are extracted from a 25 ml aliquot. The 20-mL aliquot is pumped through an HPLC cartridge (containing C18 -silica) trapping the chlorinated acids. The concentrator cartridge is valved in-line with the Cl8 analytical column following extraction. The analytes are separated and measured by photodiode array-ultraviolet detection (PDA-UV). NOTE: A liquid-solid extraction disk is perfectly acceptable for use in the in-line extraction of the analytes providing all quality control (QC) criteria are met or exceeded.

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
50594-66-6 Acifluorfen
25057-89-0Bentazon
133-90-4 Chlorambena
94-75-7 2,4-D
94-82-62,4-DB
1918-00-9 Dicamba
51-36-5 3,5-Dichlorobenzoic acid
120-36-5Dichlorprop
88-85-7 Dinoseb
7600-50-25-Hydroxydicamba
94-74-6 MCPA
93-65-2MCPP
100-02-74-Nitrophenol
87-86-5 Pentachlorophenol (PCP)
1918-02-1Picloram
93-76-5 2,4,5-T
93-72-12,4,5-TP
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