Effect Factor and Data Calculation of Carbon and Nitrogen Content of Soil and Sediment Determined by Element Analyzer

The results determined by an element analyzer are affected by the pretreatment (drying, acidification), weight of sample and calculation standard. The present results suggested that acidification would decrease the nitrogen content 2.6%~40%, the determination of carbon is significantly affected by the sample weight, the results will be more accurate if calculated by the standard which is more similar with the samples.