钼酸铵
化学
比色法
钼蓝
钾
抗坏血酸
钼酸盐
酒石酸盐
RGB颜色模型
磷酸盐
铵
色谱法
无机化学
生物化学
操作系统
有机化学
原材料
计算机科学
食品科学
作者
Chuanxiao Yang,Xiaojie Sun,Bin Liu,Huiqin Lian
出处
期刊:Chinese Journal of Analytical Chemistry
[China Science Publishing & Media Ltd.]
日期:2007-06-01
卷期号:35 (6): 850-853
被引量:33
标识
DOI:10.1016/s1872-2040(07)60059-0
摘要
In acidic medium, the interaction of potassium dihydrogen phosphate with ammonium molybdate, potassium antimonyl tartrate, and ascorbic acid result in a blue compound complex. With increasing potassium dihydrogen phosphate concentration, the color of the solution and the RGB value of digital imaging are increased. Thus a novel assay of total phosphorus based on digital imaging colorimetry (DIC) has been developed. By comparing the DIC and the ammonium molybdate spectrophotometric method, including factors on digital imaging and optimal conditions of same interacting system were discussed. The present novel assay is very simple and sensitive. Water samples were analyzed with the relative standard deviation (RSD) of 1.8%–3.4% and the recovery of 99.7%–102.5%. The results of determinations for water samples are consistent with those obtained using the spectrophotometric method.
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