https://scholars.lib.ntu.edu.tw/handle/123456789/45381
標題: | Effects of acidity and molybdate concentration on the kinetics of the formation of the phosphoantimonylmolybdenum blue complex | 作者: | Pai, Su-Cheng Yang, Chung-Cheng Riley, J. P. |
關鍵字: | molybdenum; phosphate; article; assay; methodology; nonhuman; ph; spectrophotometry | 公開日期: | 1990 | 起(迄)頁: | 115-120 | 來源出版物: | Analytica Chimica Acta | 摘要: | The effects of variation of acidity and molybdate concentration on the spectrophotometric determination of phosphate by the method of Murphy and Riley were studied. The [H+]:[Mo] ratio was found to be a crucial parameter which not only influences the form of the final reduced complex, but also plays a key role in controlling the reaction kinetics. Normal colour formation of the reduced phosphoantimonylmolybdenum blue complex was only observed with a ratio between 60 and 80; the reaction was faster at low acidities. Silicate is a possible source of interference at high temperatures, but the formation of the silicoantimonylmolybdenum blue complex was found to be much slower than that of the corresponding phosphorus species. © 1990. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/173762 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0025355530&doi=10.1016%2fS0003-2670%2800%2985116-8&partnerID=40&md5=3fd5055e785f49d1337bc0aa652b9281 |
DOI: | 10.1016/S0003-2670(00)85116-8 |
顯示於: | 海洋研究所 |
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