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senlinpeiyu

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[求助] 单位的转换

土壤水溶性有机氮(WSON)测定
1.        称取鲜土5g,土水比1:5,浸提液在liqui TOCⅡ测定水溶性总氮(TNb),测定的结果为a mg/L。
2.        将上述的浸提液用连续流动分析仪测定铵态氮(NH4+)、硝态氮(NO3-),测定的结果为b mg/L、c mg/L。
计算:1.先将mg/L转换为mg/kg。
A(mg/kg)=(a mg/L*25ml*10-3)/(5g*K*10-3)
25ml为所加去离子水的量;5g为鲜土重;K为土壤水分换算系数;10-3为单位换算系数。
mg/L转换为mg/kg对吗?
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