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AA3型连续流动分析仪测定土壤和植物全氮的方法研究

2011/01/10 15:03

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2011/01/10
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研究了用AA3型连续流动分析仪测定土壤和植物全氮的方法。结果表明,根据待测溶液中硫酸浓度调节缓冲溶液中NaOH 的量,保持反应pH在适宜范围,利用连续流动分析仪能够准确地测定土壤和植物中的全氮含量,与蒸馏滴定法的测定结果相比无显著差异,标准曲线相关系数达0.999以上,平均回收率为97.8 ~l02.3 ,土壤和植物待测液中NH4+ -N含量的检出限分别为0.033 7和0.01 6 5 mg/L。

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分析仪器

AA3 连续流动分析仪(流动注射分析仪)

型号: AA3

产地: 德国

品牌: SEAL

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AA3型连续流动分析仪测定土壤和植物全氮的方法研究.pdf
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