PMC:4764609 / 2197-3383 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/4764609","sourcedb":"PMC","sourceid":"4764609","source_url":"https://www.ncbi.nlm.nih.gov/pmc/4764609","text":"Imperfect industrial activities like mining, electroplating, printing, photography, etc. and non-uniform technological development are the major factors contaminating the environment with toxic substances including heavy metals. These metals pose a significant threat to the environment and the health of living organisms because of their toxicity due to accumulation in living tissues. Metal cleaning and plating baths, pulp, paper board mills, printed circuit board production, wood pulp production, fertilizer industry, etc. are releasing copper into the environment. An ultra trace amount of copper is essential for living organisms but excess is detrimental. In human beings, ailments such as stomach upset and ulcers, liver and brain damage are caused by the excess concentrations of copper (Zhu et al. 2009). According to Safe Drinking Water act, copper has a permissible limit of 1.3 mg/L in drinking water (Johnson et al. 2002). Therefore removal of excess copper from the contaminated waters is the most important environmental issue of worldwide concern since fresh water is the basic need for biotic community. Also, depletion of copper sources could be avoided by recovery.","tracks":[{"project":"2_test","denotations":[{"id":"28330153-19297086-710","span":{"begin":809,"end":813},"obj":"19297086"},{"id":"28330153-12092755-711","span":{"begin":931,"end":935},"obj":"12092755"}],"attributes":[{"subj":"28330153-19297086-710","pred":"source","obj":"2_test"},{"subj":"28330153-12092755-711","pred":"source","obj":"2_test"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"2_test","color":"#93ecab","default":true}]}]}}