spot colorimetry

例句：

1. 1. The spot colorimetry method was used to analyze the chemical composition of the soil.
   斑点色彩测定法被用来分析土壤的化学成分。
2. 2. In spot colorimetry, a small amount of sample is placed on a filter paper and then illuminated with light.
   在斑点色彩测定法中，一小份样品被放在滤纸上，然后用光照射。
3. 3. The spot colorimetry technique has been widely used in environmental monitoring.
   斑点色彩测定技术在环境监测中得到了广泛应用。