Simple Analysis Method of Hexavalent Chromium in Soil Using a Portable Device

A simple method for the analysis of hexavalent chromium in soil was examined. We examined an analytical method that combines diphenylcarbazide absorptiometry, which has the advantages of simplicity and speed, and a detection method using a portable spectrophotometer with good portability, and investigated its validity. Good linearity was obtained. The recovery of Cr(VI) was 92.5 +/- 2.3%, and the determination limit was about 30 mu g/g-soil. Soil contamination is often unevenly distributed in portions of contaminated areas, so many samples need to be analyzed to find contaminated sites. Therefore, the ability to analyze hexavalent chromium levels at low cost using a portable device may also apply for soil analysis in developing countries.

Automated summary

A simple method for analyzing hexavalent chromium in soil was examined, combining diphenylcarbazide absorptiometry and a portable spectrophotometer. The method showed good linearity and high recovery rate of Cr(VI). This low-cost approach may be suitable for soil analysis in developing countries.