排序方式: 共有4条查询结果,搜索用时 15 毫秒
1
1.
Farhad Ghamari Yadollah Yamini Farshid Ghorbani Shahna Abbas Moghimbeigi 《毒物与环境化学》2017,99(5-6):760-771
Hollow-fiber liquid-phase microextraction based on carrier-mediated transport for analysis of methyl hippuric acids in aqueous samples is described. Under optimized conditions, relative recoveries of 83%–98% and limits of detection of 2–3 µg L?1 were obtained, with linear calibration curves for the three isomers in the range of 10–50,000 µg L?1. The method was applied for the determination of urine samples of volunteers at various working environments. 相似文献
2.
Seyed Jamaleddin Shahtaheri Farhad Ghamari Farideh Golbabaei Abbas Rahimi-Froushani Mohsen Abdollahi 《International journal of occupational safety and ergonomics》2013,19(4):377-388
Factors affecting solid phase extraction (SPE) of trans,trans-muconic acid (ttMA), as a benzene biomarker, including sample pH, sample concentration, sample volume, sample flow rate, washing solvent, elution solvent, and type of sorbent were evaluated. Extracted samples were determined by HPLC-UV(highperformance liquid chromatography-ultraviolet). The analytical column was C18, UV wave length was 259 nm, and the mobile phase was H2O/methanol/acetic acid run at flow rate of 1 ml/min. A strong anion exchange silica cartridge was found successful in simplifying SPE. There was a significant difference between recoveries of ttMA when different factors were used (p < .001). An optimum recovery was obtained when sample pH was adjusted at 7. There was no significant difference when different sample concentrations were used (p > .05). The optimized method was then validated with 3 different pools of samples showing good reproducibility over 6 consecutive days and 6 within-day experiments. 相似文献
3.
Seyed Jamaleddin Shahtaheri Farhad Ghamari Farideh Golbabaei 《International journal of occupational safety and ergonomics》2005,11(4):377-388
Factors affecting solid phase extraction (SPE) of trans,trans-muconic acid (ttMA), as a benzene biomarker, including sample pH, sample concentration, sample volume, sample flow rate, washing solvent, elution solvent, and type of sorbent were evaluated. Extracted samples were determined by HPLC-UV (high performance liquid chromatography-ultraviolet). The analytical column was C18, UV wave length was 259 nm, and the mobile phase was H(2)O/methanol/acetic acid run at flow rate of 1 ml/min. A strong anion exchange silica cartridge was found successful in simplifying SPE. There was a significant difference between recoveries of ttMA when different factors were used (p < .001). An optimum recovery was obtained when sample pH was adjusted at 7. There was no significant difference when different sample concentrations were used (p > .05). The optimized method was then validated with 3 different pools of samples showing good reproducibility over 6 consecutive days and 6 within-day experiments. 相似文献
4.
Ghamari Roya Mahdavi-Mazdeh Mohammad Ghannadpour Seyed Farid 《Environment, Development and Sustainability》2022,24(8):10403-10441
Environment, Development and Sustainability - This study addresses the problem of selecting a supplier bound by sustainability and resilience criteria, focusing on the steel industry as a case in... 相似文献
1