12/12/2022 0 Comments Mercury poisoning symptoms![]() Whole blood levels of Lead (Pb), Mercury (Hg), Arsenic (As), Cadmium (Cd), and Chromium (Cr) were determined in Nigerian e-waste workers (n=63) and in age-matched non-exposed participants (n=41), using standard electrothermal atomic absorption spectrometry and inductively coupled plasma-mass spectrometry methods. In this study, we evaluated the toxic metal levels in Nigerians occupationally exposed to e-waste. The poor management of electronic wastes (e-waste) in Nigeria exposes workers to toxic chemicals in waste electrical and electronic equipment. ![]() Toxicity of Hg had been quantified with in vitro cultured human neuroblastoma cell line since it has neurotoxic effects, its neural evaluation has implications in environmental health issues. This study clearly indicated that methylmercury chloride is more toxic than methylmercury hydroxide to SH-SY5Y cell line. Computed DNA fragmentation indices in comet assays were 98.6 ± 0.57 30 mg/L with CH3HgCl and 76 ± 5.29 30 mg/L with CH3HgOH. Similarly for CH3HgOH, the MIC value in each assay method was invariably 3 mg/L, the LC25 values were in the range 12.58 to 16.59 mg/L, and LC50 values were 19.49 to 23.44 mg/L LC75 values were 27.54 to 30.90 mg/L and LC100 value was 42 mg/L in each assay done for cytotoxicity and genotoxicity studies. Moreover, LC100 value was 30 mg/L, known from comet assay experiments for CH3HgCl. In cytotoxicity, CH3HgCl had minimum inhibitory concentration (MIC) value in each assay method as 3 mg/L invariably LC25 values were in the range 7.41 to 10.23 mg/L, and LC50 values were 14.79 to 15.48 mg/L while LC75 values were 20.89 to 26.91 mg/L. The obtained toxicity data were used for probit analysis. For cytotoxicity study, four staining assay methods independently with trypan blue (TB), acridine orange/ethidium bromide (AO/EB), 3-(4,5-dimethylthiazol-2-yl) 2,5-diphenyl tetrazolium bromide (MTT), and neutral red (NR) were used and the comet assay method was done for genotoxicity study. Both cytotoxicity and genotoxicity experiments were carried out to find out the more toxic compound. This is the comparative study between two methylmercury compounds to find out the extent of toxicity of these compounds are toxic to SH-SY5Y cell line. Toxicities of methylmercury chloride (CH3HgCl) and methylmercury hydroxide (CH3HgOH) to cultured neuroblastoma cell line SH-SY5Y in vitro are evaluated. The highest mean decrease in total dissolved solids was 660.67 ppm from the beginning before treatment of 909 ppm. The results showed that the combination of electrolysis time of 120 minutes and electric current of 3 A showed that the highest dissolved ions decreased by an average of 1,692.3 µs / cm from the initial pre-treatment of 1772 µs / cm. The method used is a survey in the form of sampling followed by waste treatment using electrolysis. ![]() The purpose of this study was to examine the length of electrolysis and the amount of electric current used to reduce dissolved ions and total dissolved solids from coal stockpile wastewater. ![]() Various ways to deal with pollution include the electrolysis method, in which the liquid waste is flowed by a direct electric current through the electrode media. One of the industrial activities is the coal mining industry. In addition to having a positive impact on the economy, industrial progress, on the other hand, has a negative impact in the form of pollution. ![]() The advancement of science and technology plays a very important role in encouraging industrial progress. ![]()
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