| 钒钼黄—差示光度法检测磷铁合金中磷含量 |
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| 引用本文： | 杨丽飞,苏明跃,李异,刘静. 钒钼黄—差示光度法检测磷铁合金中磷含量[J]. 铁合金, 2012, 43(1): 45-48 |
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| 作者姓名： | 杨丽飞 苏明跃 李异 刘静 |
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| 作者单位： | 天津出入境检验检疫局 天津 中国 300456 |
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| 摘 要： | 探讨了显色体系的稳定性,其酸度、显色剂用量、样品主要基体以及残余高氯酸对检测的影响。选择了适宜的显色时间、硝酸加入量、显色剂用量等检测条件。磷溶液浓度在2～10 mg/L范围内呈良好的线性关系。检测磷铁中磷含量,回收率可达99.8%～101.4%,相对标准偏差小于2.71%。对磷铁标准样品进行分析,结果同认定值完全一致。
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| 关 键 词： | 磷铁 磷 钒钼黄 差示光度法 |
DETERMINATION OF P CONTENT IN FERROPHOSPHORUS BY VANADIUM MOLYBDENUM YELLOW DIFFERENTIAL SPECTROPHOTOMETRY |
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| Yang Lifei,Su Mingyue,Li Yi,Liu Jing. DETERMINATION OF P CONTENT IN FERROPHOSPHORUS BY VANADIUM MOLYBDENUM YELLOW DIFFERENTIAL SPECTROPHOTOMETRY[J]. Ferro-alloys, 2012, 43(1): 45-48 |
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| Authors: | Yang Lifei Su Mingyue Li Yi Liu Jing |
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| Affiliation: | (Tianjin Entry-Exit Inspection and Quarantine Bureau,Tianjin 300456, China) |
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| Abstract: | The phosphorus content of ferrophosphorus was determined by vanadium molybdenum yellow differential spectrophotometry. The stability of coloration system was discussed, and the influence of acidity, dosages of color developer, main matrix of samples and residual high chlorine acid was discussed. Selected the detection conditions including the chromogenic time, addition amount of nitric acid and dosages of color developer. The better linear relation was presented when phosphorous solution concentration is 2 N10 mg/L. Determined P content in ferrophsporus, the recovery was up to 99.8%-101.4 %.The relative standard deviation for phosphorus test was below 2.71%. The analysis results of ferrophophorus standard samples were in good agreement with the certified values. |
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| Keywords: | ferrophosphorus phosphorus vanadium molybdenum yellow differential spectrophotometry |
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