持久曲线法是根据地球化学找矿工作的需要提出来的,通过对中国地矿部一级水系沉积物标样及土壤标样、吉林省二级标样的分析结果对照检查看,绝大多数元素的准确度可达到国家1:20万化探扫面的要求。我们用该方法作广东省二级标样,其分析准确度亦达到国家要求(表1)对实际样品分析的精密度都在10％左右(表2),已高于国家1:20万化探扫面的要求。 The long-term curve method is based on the need of geochemical prospecting work. According to the inspection results of the secondary standard samples in Jilin Province and the standard samples of sediment and soil in the first grade of the Chinese Ministry of Geology and Mineral Resources, the vast majority The accuracy of the element can reach the requirements of 1: 200,000 geochemical exploration in the country. We use this method as a secondary standard in Guangdong Province, and its analytical accuracy also meets the national requirements (Table 1). The precision of actual sample analysis is about 10% (Table 2), which is higher than the national 1: 200,000 Probe the surface of the request.