由于不断采用新的和先进的分析仪器,提取检材的要求就越严格。用金属器具提取,往往会或多或少地污染检材,致使微量元素的测定可能出现假阳性。我们在办案实践中,研制了玻璃刀、塑料刀、竹探针和木探针等非金属小工具,简易适用,效果满意,现介绍如下。制作方法:1.玻璃刀的制作:取3—5mm 厚的 Due to the continuous use of new and advanced analytical instruments, the more stringent the requirements for the extraction of samples are. With metal utensils, often more or less contaminated samples, resulting in the determination of trace elements may appear false positive. In handling the case, we developed glass knives, plastic knives, bamboo probes and wooden probes and other non-metallic gadgets, easy to apply, with satisfactory results, are presented below. Production methods: 1. Glass knife production: Take 3-5mm thick