Polyethylene terephthalate, a copolymer of terephthalic acid (TPA) or dimethyl terephthalate (DMT) with ethylene glycol, has food, beverage, and drinking water contact applications. Di-2-ethylhexyl terephthalate (DEHT) is a plasticizer in food and drinking water contact materials. Oral reference
Quantitative methods are described for the analysis of pH, sodium, ammonium, potassium, calcium, magnesium, chloride, phosphate, and sulfate, as well as terephthalic acid and dimethyl terephthalate, in a single urine sample as small as 20 microliter. The procedure utilizes ion chromatography and