Determination of environmental pollutants bythermal lens method

The thermal lens method to determine three environmental pollutants including carbon disulfide incarbon tetrachloride, anthracene in benzene and benzophenone in ethanol was introduced . The detection limits were 2. 0 × 10-6 - 4. 0 × 10-7 and 8. 5 × 10-6 mol/L, respectively, equivalent to about 1. 0 ×10-3 absorbance. Some work on the improvement of the thermal lens technique are also presented in this paper.