Equivalence of Environmental and Agricultural Standard Analysis Methods in Soil Monitoring
To evaluate the comprehensibility of monitoring data obtained from different standard analysis methods in the environmental and agricultural fields during soil monitoring,this study used multiple statistical methods to analyze the equivalence of standard analysis methods used for 11 monitoring indicators,including soil pH value,organic matter,cation exchange capa-city,copper,zinc,lead,nickel,cadmium,chromium,mercury,and arsenic.The comparison results of technical specifications show that in the fields of environment and agriculture,the technical specifications used in the sampling,preservation,and preparation of soil samples have little impact on the analysis results.The results of method performance indicators show that there is no significant difference in precision between the two types of standard analysis methods.The significance test results show that except for pH value and mercury,there are significant differences in the other 9 indicators.When the equivalence boundary is±20％,the results of equivalence evaluation show that the two standard analysis method sets for measuring pH value,organic matter,cation exchange capacity,copper,zinc,nickel,mercury,and arsenic are equivalent,and the monitoring data obtained can be shared.The performance evaluation and significance testing of methods cannot quantitatively determine the range of differences between method sets,while the double unilateral test compensates for this deficiency and avoids misjudgment of significance caused by insufficient sample size or high precision.Therefore,the evaluation results of this study can be used to integrate and manage the soil env-ironmental quality monitoring network in the environmental and agricultural fields,which can achieve a more comprehensive understanding of the pollution status of agricultural soil environment.
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万方数据
