This standard specifies the gas chromatography method for the determination of thiodiacetic acid (TDGA) in urine. The minimum detection concentration of this method is 0.25 mg/L. This standard is applicable to the determination of thiodiacetic acid in the urine of workers exposed to vinyl chloride.
WS/T 63-1996 history
1996WS/T 63-1996 Urine--Determination of thiodiglycolic acid.Gas chromatographic method