The discovery of an atomic sodium exosphere at Mercury raises the question of whether Mercury, like I0 at Jupiter, can maintain a heavy ion magnetosphere. We suggest that it does, and that heavy ions (mainly Na ÷) from the exosphere are typically accelerated to keV energies and make important or dominant contributions to the mass (~300 g sec -1) and energy ( 3 x 109 W) budget s of the magnetosp...

This paper describes a indirect complexometric method for the determination of mercury in the presence of co-ions, based on the selective masking ability of potassium iodide. To the mixture of mercury (II) and other metal ion solution, EDTA solution was added in excess of the metal ions present. The pH of the solution was adjusted to 5.0-6.0 using solid hexamine (10 ± 2 g) and surplus EDTA was ...

X-ray photoelectron spectroscopy (XPS), secondary ion mass spectrometry (SIMS), rotating disc electrode-electrochemical impedance spectroscopy (RDE-EIS) and synchrotron radiation-grazing incidence X-ray diffraction (SR-GIXRD) have been used to study the response mechanism of the mercury(II) chalcogenide ion-selective electrode (ISE) in saline media. XPS and SIMS have shown that the chalcogenide...

Fast and reliable analytical methods for mercury speciation would aid in understanding mercury offgas chemistry. Presently, the U.S. Environmental Protection Agency (EPA) regulates only total mercury; however, many studies indicate that mercury toxicity is highly dependent on the mercury speciation. For example, amalgams and mercury sulfides have relatively low toxicities, while organomercury a...

The separation of mercury ions from artificially contaminated water by the foam fractionation process using a biosurfactant (surfactin) and chemical surfactants (SDS and Tween-80) was investigated in this study. Parameters such as surfactant and mercury concentration, pH, foam volume, and digestion time were varied and their effects on the efficiency of mercury removal were investigated. The re...

The detection of toxic metals is indispensable for water safety. In this paper, a small molecule aggregation-induced emission (AIE) with barbiturate group was synthesized. It combined mercury ions to form stable metal complex so as enhance the color solution achieve visualization ion detection. fluorescent showed good selectivity and anti-interference ability had low limit (DL = 22.27 nM) ion.

Four groups of male Wistar rats, 4 animals in each, were fed a diet containing 3ppm of methylmercury in addition to ion exchange water containing 0% (control), 1%, 2% and 4% ethanol for drinking during the 40-day experimental period. Samples of urine and feces were collected every 8 days and the brain, liver and kidneys excised at the end (day 40) of the experimental period were analysed for co...

The marine mussel, Mytilus edulis, possesses low molecular weight, metal-binding proteins which can be induced by and, in turn, bind mercury when individuals are exposed to low, but elevated concentrations of mercury as HgCl2. Induction of the proteins by exposure of mussels to copper, cadmium, or mercury is associated with enhanced tolerance to mercury toxicity. Mercury-binding proteins isolat...

Among the heavy metals, mercury is often considered the most toxic; moreover, current methods used to sense and quantitate mercury in the environment are expensive and labor intensive. In response, the sensor community has sought new approaches to detect and quantitate mercury. One such approach is the use of porphyrins as selective reagents for the detection of mercury. Porphyrins have shown g...