Study of Arsenic-Contaminated Soil Bacterial Community Using Biochip Technology
2020
Bunin, Evgeni | Khatisashvili, Gia | Varazi, Tamar | Kartvelishvili, Tamar | Asatiani, Nino | Sapojnikova, Nelly
The ecosystems near arsenic mining industrial areas are characterized with an elevated level of pollutants. In Caucasus region, such a hotspot is presented in Western Georgia: Uravi and Tsana abandoned arsenic production facilities and nearby mining tailings stored in deteriorating conditions that pose a threat to the population. The research presents a study of the local bacteria community of highly arsenic-contaminated soils (from 400 mg/kg at Uravi arsenic sulfide mineral processing facility to 11.3 g/kg at arsenic oxide storage area in Tsana) using an innovative, multitasking microscale bioanalytical method for environmental enquiries – DNA biochip (microarray). The detected Shewanella spp., Bacillus spp., and sulfate-reducing bacteria were considered as promising objects for future projects on in situ recovery of vast arsenic-contaminated areas applying remediation methods.
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