Department of Environmental Microbiology, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany.
Environ Sci Technol. 2012 Mar 20;46(6):3281-7. doi: 10.1021/es203511k. Epub 2012 Feb 28.
A test kit based on living, lyophilized bacterial bioreporters emitting bioluminescence as a response to arsenite and arsenate was applied during a field campaign in six villages across Bangladesh. Bioreporter field measurements of arsenic in groundwater from tube wells were in satisfying agreement with the results of spectroscopic analyses of the same samples conducted in the lab. The practicability of the bioreporter test in terms of logistics and material requirements, suitability for high sample throughput, and waste disposal was much better than that of two commercial chemical test kits that were included as references. The campaigns furthermore demonstrated large local heterogeneity of arsenic in groundwater, underscoring the use of well switching as an effective remedy to avoid high arsenic exposure.
在孟加拉国六个村庄的实地考察中，应用了一种基于活体冻干细菌生物传感器的试剂盒，该传感器可以对亚砷酸盐和砷酸盐发出生物发光响应。从管井中采集的地下水的生物传感器现场测量结果与实验室对相同样本进行的光谱分析结果非常吻合。从物流和材料要求、高通量样本适用性以及废物处理等方面来看，生物传感器测试的实用性明显优于两种作为参考的商业化学测试试剂盒。这些活动还表明，地下水砷的局部异质性很大，强调了切换水井是避免高砷暴露的有效补救措施。
