Uncertainty evaluation for the measurement of alkylphenols and alkylphenol ethoxylates content in textiles by LC-MS/MS
According to GB/T 23322-2018"Textiles—Determination of surfactant—Alkylphenols and Alkyl-phenol ethoxylates",octyl phenol(OP),nonylphenol(NP),octylphenol polyoxyethylene ether(OPn EO)and non-ylphenol polyoxyethylene ether(NPn EO)in textile were ultrasonic extracted by methanol and measured by LC-MS/MS method,and uncertainties of the results were evaluated.The results showed that the expanded uncer-tainties of OP,NP,OPn EO and NPn EO were 0.77,1.20,1.22 and 1.50 mg/kg(k=2)respectively when their contents were 5.87,8.93,9.31 and 10.80 mg/kg respectively.The main factors of uncertainties were calibra-tion of LC-MS instrument and fitting of standard curve.
textilealkylphenolsalkylphenol ethoxylatesevaluation of uncertainty
万方数据
维普
