| 双波长分光光度法间接测定硫酸根离子 |
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| 引用本文： | 窦好义,曹宇凡.双波长分光光度法间接测定硫酸根离子[J].新疆农业大学学报,1990(2). |
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| 作者姓名： | 窦好义 曹宇凡 |
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| 作者单位： | 八一农学院基础部，八一农学院基础部 |
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| 摘 要： | 钡-茜素红-明胶在pH值为4.0的稀缓冲溶液中能显示很稳定的颜色,应用双波长K系数分光光度法,可以测其钡的含量。把通过阳离子交换柱的土壤浸提液与过量钡盐标准溶液相混合,使其产生硫酸钡沉淀,然后测定过滤液中剩余的钡,借以间接地测算土壤中硫酸根离子的含量。此分析方法具有较高灵敏度及准确性,可在土壤分析范围内推广。
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| 关 键 词： | 双波长K系数法 茜素红 工作曲线 吸收曲线 吸光度 参比溶液 土壤 |
An Indirect Determination of Sulfate Radical with Dual Wavelength Spectrophotormetric Method |
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| Dou Haoyi Cao Yufan.An Indirect Determination of Sulfate Radical with Dual Wavelength Spectrophotormetric Method[J].Journal of Xinjiang Agricultural University,1990(2). |
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| Authors: | Dou Haoyi Cao Yufan |
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| Institution: | Department of Basic Courses |
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| Abstract: | Barium-Alizarin S-Gelatin, a newly discovered developing system in this paper, can improve both the sensitivity and accuracy of analysis methods. By using it, a satisfactory result of analysis will be reached to determine indirectly the content of sulphate in soil. |
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| Keywords: | dual-wavelength K-factor spectrophotometry alizarin s working curve absorption curve absorbance reference solution soil |
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