| 土壤硝态氮两种测定方法的比较 |
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| 引用本文： | 涂常青,温欣荣,陈桐滨.土壤硝态氮两种测定方法的比较[J].安徽农业科学,2006,34(9):1925-1925,1928. |
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| 作者姓名： | 涂常青 温欣荣 陈桐滨 |
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| 作者单位： | 嘉应学院化学系,广东,梅州,514015 |
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| 摘 要： | 对土壤硝态氮两种测定方法进行了比较,结果表明:双波长分光光度法准确度和精密度高,样品标准加入回收率为98%~103%,RSD为1.24%~3.37%,选择性好,灵敏度高,操作简便,能有效地消除亚硝酸根、氯离子和有机物的干扰;离子选择性电极法操作简便,样品标准加入回收率为89%~90%,RSD为3.01%~5.46%,但电极稳定性受环境因素影响较大,准确度和精密度不够高,干扰较大。
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| 关 键 词： | 土壤硝态氮 双波长分光光度法 离子选择性电极法 |
| 文章编号： | 0517-6611（2006）09-1925-01 |
| 收稿时间： | 2006-02-06 |
| 修稿时间： | 2006-02-06 |
Study on the Determining Method of Nitric Nitrogen in Soil |
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| TU Chang-qing et al.Study on the Determining Method of Nitric Nitrogen in Soil[J].Journal of Anhui Agricultural Sciences,2006,34(9):1925-1925,1928. |
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| Authors: | TU Chang-qing |
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| Institution: | Department of Chemistry, Jiaying University, Meizhou,Guangdong 514015 |
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| Abstract: | Two determining methods of nitric nitrogen in soil were studied.The results showed that the recovery of dual wavelength spectrophotometry was 98%～103% and RSD was 1.24%～3.37%,which accuracy,precision,selectivity and sensitivity was high and operation was convenient.It can effective eliminate the interference of nitrite ion,chlorine ion and organic substance.The recovery of ion selective electrode method was 89%～90% and RSD was 3.01%～5.46%,which method was easy and simple to handle,but the stability was not good,the precision was not high and the interference was big. |
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| Keywords: | Nitric nitrogen in soil Dual wavelength spectrophotometry Ion selective electrode method |
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