high sensitive chromogenie reagent for thorium

例句：

1. 1.This high-sensitivity chromogenic reagent is used to detect trace amounts of thorium in samples.
   这种高灵敏度的显色试剂用于检测样品中微量的钍。
2. 2. The scientist developed a new method to analyze the sample using this high-sensitivity chromogenic reagent for thorium.
   科学家开发了一种新的方法，使用这种高灵敏度的钍试剂来分析样本。
3. 3. The research team used this high-sensitivity chromogenic reagent for thorium toidentify the presence of thorium in the environment.
   研究团队使用这种高灵敏度的钍试剂来识别环境中是否存在钍。