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| 水中单质磷测定方法的改进 |
| Improvement of Method for the Determination of Phosphorus in Water |
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| DOI： |
| 中文关键词: 黄磷 磷钼蓝分光光度法 水质 |
| 英文关键词: Yellow phosphorous Phosphomolybdenum blue spectrophotometric method Water quality |
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| 中文摘要: |
| 探讨了《水质 单质磷的测定 磷钼蓝分光光度法（暂行）》（HJ 593-2010）中存在的问题，并对方法进行了改进。确定测定目标组分为单质磷中的黄磷；改用酸性高锰酸钾氧化体系，去除了有机磷农药的干扰；改用抗坏血酸为还原剂，采用710 nm比色波长，提高了分析灵敏度；用10 mL甲苯一次萃取，对水中黄磷的检出限为0.002 mg/L。 |
| 英文摘要: |
| Problems in Standard method "Water quality Determination of phosphorus phosphomolybdenum blue spectrophotometric method"（HJ 593-2010） were discussed. And some improvement was carried out.Yellow phosphorus was confirmed to be the analyte. Acidic potassium permanganate oxidation system was used to eliminate the interference of organophosphorus pesticides. Analytical sensitivity was improved by using ascorbic acid as a reducing agent and a colorimetric wavelength of 710 nm. The detection limit of yellow phosphorus in water was 0.002 mg/L by extraction with 10 mL toluene. |
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