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dc.contributor.authorTharinee Wongananen_US
dc.contributor.authorKanokwan Chaiyasingen_US
dc.contributor.authorBoonsom Liawruangrathen_US
dc.contributor.authorNarabhats Rannuragsen_US
dc.contributor.authorSaisunee Liawruangrathen_US
dc.description.abstractA sequential injection analysis incorporated with spectrophotometric method was developed for determination of lead, based on reaction of dithizone with lead producing pink complex and absorbance of the complex was measured at 515 nm. The analytical parameters of the system were optimized by univariate method such as reagent concentration, flow rate of reagent and injection volume. Linear calibration curve over the range of 0.02-0.08 mg L-1 and 0.1-2.0 mg L-1 lead was obtained. The detection limit of lead was 0.012 mg L-1. The relative standard deviations for five replicate injections was 0.77-1.54% for intra-day and 0.86-1.80% for inter-day. The recovery of 98.75-101.20% was achieved with sample throughput of 45 samples per hour. The proposed method has been applied to the determination of lead in vegetable samples. The obtained results were in good agreement with those obtained by the ICP-MS standard method, verified by the student t-test at the 95% confidence level.en_US
dc.subjectBiochemistry, Genetics and Molecular Biologyen_US
dc.subjectMaterials Scienceen_US
dc.titleDevelopment of Sequential Injection Analysis for the Determination of Lead in Vegetablesen_US
article.title.sourcetitleChiang Mai Journal of Scienceen_US
article.volume49en_US Mai Universityen_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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