Determination of phenylglyoxylic acid and mandelic acid in urine by high performance liquid chromatography method
10.3760/cma.j.issn.1001-9391.2017.10.018
- VernacularTitle: 尿中苯乙醛酸和苯乙醇酸测定的高效液相色谱法
- Author:
Shiwei CUI
1
;
Xingfu PAN
;
Huifang YAN
Author Information
1. National Institute of Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
- Publication Type:Journal Article
- Keywords:
Phenylglyoxylic acid;
Mandelic acid;
Styrene;
Chromatography,high pressure liquid
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2017;35(10):774-776
- CountryChina
- Language:Chinese
-
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.
