Heavy metal contamination in lakes caused by the rapid industrialization and urbanization is a serious problem. In this study, 12 heavy metals were systematically surveyed aquatic environment organisms of Dianchi Lake. Results showed that pollutions surface water exhibited decreasing order Ba > Fe Zn Mn As Ni Cr Cu Pb Cd Co, equipped consistency spatial distribution, seriously contaminat...

Methods 29 children (17 boys and 12 girls), aged from 14 days to 17 years old with different CHD underwent content analysis of following toxic substances: Al, Cd, Pb, Hg, Be, Ba, Tl, Bi, As, Ni, Sb , Sn, Sr, Ti, W, Zr, Ag, Li, B, Co, Si, V in intraoperative (23) and autopsy (6) biopsy tissue samples of heart (n=37) and great vessels (n=18) by atomic emission and absorption spectrometry methods ...

A novel chemosensor based on unsymmetrical squaraine dye (USQ-1) for the selective detection of Hg(2+) in aqueous media is described. USQ-1 in combination with metal ions shows dual chromogenic and "turn-on" fluorogenic response selectivity toward Hg(2+) as compared to Li(+), Na(+), K(+), Mg(2+), Ca(2+), Ba(2+), Al(3+), Cu(2+), Cd(2+), Mn(2+), Fe(3+), Ag(+), Pb(2+), Zn(2+), Ni(2+) and Co(2+) du...

1) Concentration determination and isolation of purified fractions of natural thiols and natural acid polysaccharides for trace metal complexation and structural experiments. 2) Determination of conditional stability constants for the complexation of selected B metal ions (such as Ag, Hg, Cd, Cu, Pb) to specific thiolic functional groups in estuarine organic matter, and of A (e.g., Cs, Ba, Th) ...

Hexaphenylbenzene (HPB) derivatives 5 and 7 having rhodamine B moieties have been designed and synthesized, and have been shown to display solvent dependent. Fluorescence resonance energy transfer (FRET) and through bond energy transfer (TBET) in the presence of Hg(2+) ions among the various cations (Cu(2+), Pb(2+), Zn(2+), Ni(2+), Cd(2+), Ag(+), Ba(2+), Mg(2+), K(+), Na(+), and Li(+)) have bee...

Pumice samples from Fukutoku-oka-no-ba in the Izu±Bonin ± Mariana (IBM) arc were analysed for 40 trace elements and Sr, Nd, and Pb isotopic compositions. These samples are shoshonites (59.4±61.8 wt% SiO2), characterized by high contents of K2O (3.74±4.64 wt%), Ba (1274±1540 p.p.m.), Rb (91±105 p.p.m.), and light rare earth elements. The characteristics of alkali-element enrichment are similar t...

Heavy metals are known to cause deleterious effects on human health through food chain. Human health risks were evaluated from consumption of heavy metal contaminated fish from Buriganga River in Bangladesh. Whole body of five fish species (Puntius ticto, Puntius sophore, Puntius chola, Labeo rohita and Glossogobius giuris) were analyzed which contained various concentrations of Cd, As, Pb, Cr,...

Inhalation and/or ingestion of toxic heavy metals enriched in road dust have effects on humans. From inhalation and dust, release readily bioavailable elements sorbed to could lead health issues such as lung or skin cancer, kidney dysfunction, hypertension, dermal lesions, peripheral neuropathy, vascular disease. On 49 soil samples collected the Metro Detroit area, we analyzed a suite trace &am...

Aerosols in the South Pacific Easterlies have been sampled at American Samoa with a cascade impactor and analysed for Pb, Ba, K, Ca, Sr, and Rb by isotope dilution mass spectrometry using ultraclean procedures. Some 84% of the Pb was found in fine (-<0.5/am) aerosols which were collected on the backup filter with an efficiency of only 33%. Sea salt and eroded terrestrial material (dust) contain...