naa a22 4500 510752632 CHVBK 20180411083110.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11270-012-1409-9 doi (NATIONALLICENCE)springer-10.1007/s11270-012-1409-9 Application of Microbial Biosensors to Complement Geochemical Characterisation: a Case Study in Northern China [Elektronische Daten] [Bo Zhang, Min Qiao, Yunxia Liu, Yuanming Zheng, Yongguan Zhu, Graeme Paton] There are significant concerns about the impact of heavy metal contamination in soils as a consequence of urbanisation and industrialisation in developing countries. Routine chemical analysis of soils is used to measure the total concentration of metals from point source or diffuse activities, but this fails to put in context the bioavailability of the analyte or the potential toxicity of multiple contaminants. Bacterial biosensors provide a useful tool for assessing the toxicity of the bioavailable fraction of heavy metals in soils and for complementing chemical analysis. There are few examples of genuine environmental applications of biosensors for pollutant diagnosis. This study applied constitutively marked biosensors (which were comprehensively characterised) to soils collected from across Northern China (60,000km2). The biosensors were responsive to soils impacted by As, Cd, Cr, Cu, Hg, Pb, and Zn when compared to ‘uncontaminated controls'. The response of the biosensor correlated with individual (or groups of) metals related to their concentration and source. The geo-accumulation index (I geo) assisted in explaining the biosensor response. The constitutively marked biosensors offered a focussed understanding of analyte bioavailability and placed in a relevant context the elemental analysis. When matrix-matched control samples can be collected, then such a biosensor procedure (as adopted here) is applicable to contrasting soils exposed to a wide range of contaminants. Biosensor applications complemented routine soil chemical analysis for this regional-scale study. Springer Science+Business Media Dordrecht, 2013 Bacterial biosensors nationallicence Heavy metal contamination nationallicence Bioavailability nationallicence Soil nationallicence Zhang Bo Institute of Biological and Environmental Sciences, University of Aberdeen, St. Machar Drive, AB24 3UU, Aberdeen, UK aut Qiao Min Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Liu Yunxia Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Zheng Yuanming Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Zhu Yongguan Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Paton Graeme Institute of Biological and Environmental Sciences, University of Aberdeen, St. Machar Drive, AB24 3UU, Aberdeen, UK aut Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-16 0049-6979 224:2<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1409-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1409-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Bo Institute of Biological and Environmental Sciences, University of Aberdeen, St. Machar Drive, AB24 3UU, Aberdeen, UK aut NATIONALLICENCE 700 1- Qiao Min Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Liu Yunxia Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Zheng Yuanming Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Zhu Yongguan Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Paton Graeme Institute of Biological and Environmental Sciences, University of Aberdeen, St. Machar Drive, AB24 3UU, Aberdeen, UK aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-16 0049-6979 224:2<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer