Soil in Sub-Saharan Africa has a low pH and high aluminum levels, which hinder agricultural productivity. In this study, WE1 aimed to develop a simple and efficient method for aluminum measurement in soil with minimal pretreatment. To achieve this, WE1 designed a potentiometric sensor for the detection of aluminum ions (Al3+). The sensor showed a range of detection for Al3+ (10-5 - 10-3 M) with a sensitivity of 17.40 mV/decade under pH 4.0 conditions. Furthermore, it exhibited high selectivity for Al3+ over possible ions. These results suggest that the proposed sensor could serve as a useful tool for soil monitoring and contribute to improved crop productivity.
Saito et al. (Sat,) studied this question.