in this work, we developed a method which combined the processes of acid-leaching, ammonium jarosite precipitating and electro-depositing to recover copper and nickel from electroplating sludge. residual sludge from an electroplating plant located in qingdao was used for acid-leaching, and more than 95% of copper, nickel, zinc, chromium and iron were extracted from the sludge. after acid-leachi...

This study examined the adsorption of copper onto raw Globimetula oreophila leaves. The adsorbent surface nature was using scanning electron microscopy and Fourier transform infrared spectroscopy. Adsorption parameters such as –log10[H+], point zero charge, initial metal concentration, mass biomass contact time were determined. Copper decreased gradually with pH. charge (PZC) obtained 4.5...

total serum copper levels of 70 pregnant women hospitalized for delivery at misaghieh (private), 90 at farah (public) maternity hospitals immediately after delivery and 27 non-pregnant women (control) were measured. the copper level in the blood serum of umbilical cord of the newborn infants was also determined. the copper levels were significantly elevated in both pregnant groups as compared t...

background: the early stage of copper poisoning is difficult to be clinically diagnosed in sheep and has not been documented clearly yet. objectives: to assess biomarkers in predicting early copper poisoning in sheep, blood samples were collected from several groups of animals from a naturally copper poisoning occurrence in an industrial region. methods: animals were divided into four experimen...

An in vitro study was performed to ascertain the marginal seal elemental composition of amalgam restored extracted teeth of known marginal leakage. Occlusal cavities were cut in 400 caries free extracted teeth and left unlined or lined with one of 5 bases. A varnish was applied to half the cavities followed by restoration with a low copper or high copper amalgam to produce 20 restoration combin...

The chemical speciation of heavy metals (arsenic, chromium, copper, lead, zinc and tin) in the sediments of former tin mining catchment Bestari Jaya, Peninsular Malaysia was determined by using the latest version of the Community Bureau of Reference, usually called the BCR 3-step sequential extraction procedure. Furthermore, a fourth step was introduced for digestion and analysis of the residue...

Blastomycosis is a disease caused by endemic fungi that ranges from severe pulmonary or disseminated to mild or asymptomatic. Environmental factors associated with it are not well described throughout the endemic area. We used the intramural State Inpatient Database from the Agency for Healthcare Research and Quality and ArcMap GIS to identify geographic high-risk clusters of blastomycosis hosp...