Solid Substrate Room Temperature Phosphorimetry for the Determination of Trace Mercury Based on the Reaction between Alkaline Phosphatase and Mercury Using Triton X‐100 as a Sensitizer
作者： Jiaming Liu , Feiming Li , Shaoqin Lin , Zhiming Li , Yayu Chen
关键词: Triton X-100 、 Repeatability 、 Analytical chemistry 、 Mercury (element) 、 Spectrophotometry 、 Chemistry 、 Phosphorescence 、 Dithizone 、 Reagent 、 Detection limit
摘要: A new solid substrate room temperature phosphorimetry (SSRTP) for the determination of trace mercury has been established, using Triton X-100 as a sensitizer. The regression equation working curve was ΔIp=11.40m(Hg2+)+1.569 (ag·spot−1, n=6, ΔIp=Ip1−Ip2, Ip1 and Ip2 referred to phosphorescence intensity blank reagent test solution, respectively), correlation coefficient (r) 0.9984. RSD valus 0.016 8.0 ag·spot−1 Hg2+ were 4.1% 1.7% (n=8), respectively, indicating that method had good repeatability. limit detection (LOD) calculated by 3Sb/k 7.0 zg·spot−1 (corresponding concentration: 1.8×10−17 g·mL−1, Sb=0.025, n=11). This high sensitivity, selectivity precision, which applied in water samples with result being agreed very well dithizone extraction spectrophotometry.
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