[Determination of phenylglyoxylic acid and mandelic acid in urine by high performance liquid chromatography method].
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
; 35(10): 774-776, 2017 Oct 20.
Article
em Zh
| MEDLINE
| ID: mdl-29294557
ABSTRACT
Objective:
To revise the standard method for the determination of phenylglyoxylic acid(PGA)and mandelic acid(MA) in urine by ultra-performance liquid chromatography.Methods:
The original standard method was evaluated by experiment, and the chromatographic column, the detection limit,quantitation limit and stabilityof the method were studied.Results:
The samples were separated by BEH Phenyl(50mm×2.1mm×1.7µm)column and the internal standard working curve method was used. The regression equations were y=3.660 7x+0.066 3 and y=5.161 2x-0.007 3 for MA and PGA respectively. Linear correlation coefficients were 0.999 3 and 0.999 1. Linearity ranges were 0.10-1.00 mg/ml,0.04-0.40 mg/ml. The recoveries of PGA and MA were 91.6%-97.1% and 84.3%-99.0%,the precision were 0.9%-4.6% and 0.5%-1.9%. The detection limit and quantitation limit of the method were 1.1 mg/L and 3.7 mg/L for PGA, 5.4 mg/L and 17.9 mg/L for MA.Conclusion:
The method uses the phenyh modified chromatographic column, determines the detection limit. The method can improve quantitation limit, the detection accuracy and meet the detection of occupational population samples.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Cromatografia Líquida de Alta Pressão
/
Cromatografia Líquida
/
Glioxilatos
/
Ácidos Mandélicos
Limite:
Humans
Idioma:
Zh
Ano de publicação:
2017
Tipo de documento:
Article