Determination of phosphorus by phosphorus molybdenum blue spectrophotometry by bismuth antimony sensitization

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia Pub Date : 2023-09-19 DOI:10.4314/bcse.v37i6.1

Qing-Zhou Zhai

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Abstract

ABSTRACT. The determination of phosphorus in rain water is of great significance. In this paper the optimum conditions of phosphorus molybdenum blue spectrophotometric method for the determination of phosphorus content were obtained. At the maximum absorption wavelength 690 nm, the apparent molar absorptivity is ε690 nm = 1.44 × 104 L·mol-1·cm-1. Beer’s law is followed over the range of 0.02-1.8 μg·mL-1 for phosphorus(V) content. Bismuth(III) and antimony(III) as the sensitizer has a sensitization effect on the phosphomolybdenum blue photometry. The addition of both simultaneously increases the sensitivity by 71.3%. The present method has been used for the determination of phosphorus in water samples. The recovery of method is between 99.20 - 100.1% and the relative standard deviation is between 1.31-1.33% for eleven determination. The results determined by the present method were in agreement with those of atomic absorption spectrometry. This method can avoid the harm of organic reagent to human body and to environmental pollution without organic solvent extraction. This method does not need heating with room temperature color development. Compared with other methods, it has the advantages that the operation is simple, fast and the sensitivity is high. Bull. Chem. Soc. Ethiop. 2023, 37(6), 1307-1313. DOI: https://dx.doi.org/10.4314/bcse.v37i6.1

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铋锑敏化磷钼蓝分光光度法测定磷

摘要雨水中磷的测定具有重要意义。本文确定了磷钼蓝分光光度法测定磷含量的最佳条件。在最大吸收波长690 nm处，表观摩尔吸收率ε690 nm = 1.44 × 104 L·mol-1·cm-1。磷(V)含量在0.02 ~ 1.8 μg·mL-1范围内符合Beer定律。铋(III)和锑(III)作为增感剂对磷钼蓝光度法有增感作用。两者同时加入可使灵敏度提高71.3%。本方法已用于水样中磷的测定。方法的回收率为99.20 ~ 100.1%，相对标准偏差为1.31 ~ 1.33%。本方法测定的结果与原子吸收光谱法测定的结果一致。该方法既避免了有机试剂对人体的危害，又避免了有机溶剂萃取对环境的污染。这种方法不需要室温显色加热。与其他方法相比，具有操作简单、快速、灵敏度高的优点。公牛。化学。Soc。中国生物医学工程学报，2017,37(6)，1307-1313。& # x0D;DOI: https://dx.doi.org/10.4314/bcse.v37i6.1

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来源期刊

Bulletin of the Chemical Society of Ethiopia 化学-化学综合

CiteScore

2.20

自引率

8.30%

发文量

113

审稿时长

6-12 weeks

期刊介绍： The Bulletin of the Chemical Society of Ethiopia (BCSE) is a triannual publication of the Chemical Society of Ethiopia. The BCSE is an open access and peer reviewed journal. The BCSE invites contributions in any field of basic and applied chemistry.