• Analytical Science and Technology
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• v.14 no.6
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• pp.535-539
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• 2001

One-dimensional coordination polymer of cadmium(II) complex, $[Cd(SCN)_2(C_4H_6N_2]_n$, has been prepared and characterized by X-ray single crystallography. Structure analysis reveals that each cadmium(II) atom is six-coordinated in distorted octahedral fashion with $CdS_2N_4$ composition. $CdS_2N_4$ composition contains two S and two N atoms from four thiocyanates and tow N atoms from two 4-methylimidazole ligands. Central cadmium(II) atoms are run in parallel to the a-axis and are doubly bridged with neighboring cadmium(II) atoms by the thiocyanate and isothiocyanate ligands. Thus, this complex has a one-dimensional polymer structure in which the 4-methylimidazole is in the trans conformation.

• YAKHAK HOEJI
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• v.53 no.6
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• pp.342-350
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• 2009

The interaction of cadmium (II) ion with quercetin and (+)-catechin was investigated in aqueous solution at various pH. The flavonoid/cadmium stochiometries for cadmium (II) binding to quercetin and (+)-catechin have been determined by UV-vis spectroscopy. 1 : 1 Cd (II)-Flavonoid complex had a maximum absorbance and showed the bathochromic shift of the long-wavelength band of the UV-vis spectra in the alkaline pH, that occurs upon complexation, due to a ligandto-metal charge transfer. These results suggest that Cd (II)-flavonoid complex has the optimal condition of chelation in 0.2 M $NH_3$ - 0.2 M $NH_4Cl$ (pH 8.0) solution.

• Environmental Engineering Research
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• v.24 no.1
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• pp.31-37
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• 2019

In this paper the results of the biosorption of lead(II) and cadmium(II) with sugarcane bagasse in fixed bed columns are presented. Experimental data were fitted to several models describing the rupture curve for single-component and two-component systems. The percentages of removal of lead and cadmium in single-component systems are 91% and 90%, respectively. In lead-cadmium bicomponent systems the percentage of elimination of lead was 90% and cadmium 92%. In single-component systems, Yoon-Nelson and Thomas models successfully reproduce the rupture curves. In two-component system, the Dose-Response model was the best one reproducing the experimental rupture curves in the entire measured range.

• Journal of environmental and Sanitary engineering
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• v.3 no.2 s.5
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• pp.61-78
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• 1988

This study was carried out to clarify the effect of dietary calcium, casein and suet on intestinal absorption of cadmium in mice. It was performed for 30 days, from April 11, to May 10, 1988. Ninety mice were devided into 4 experimental groups and control group with 6 mice each dietary group, and measured survival ratio, body weight and weight ratio of organ to body. The contents of cadmium in liver, kidney, spleen, muscle and skin with hair, and feces were analyzed by atomic absorption spectrophotometer after sacrifice by anesthesia. The ratio of survival after 30 day breeding was $100\%$ in control group, but $66.7\%$ in group IV(basal diet + Cd + Ca) with $100{\mu}g$ one dose and with 50ppm cadmium containing fluid free-intake, and group V (basal diet + Cd + suet) with free-intake of 50ppm containing cadmium fluid. The ratio of body weight gains in cases of single dose $100{\mu}g$ of cadmium was highest as $42.3\%$ in group IV and lowest as $26.0\%$ in group V, in cases of free-intake of 50ppm containing cadmium fluid was highest as $24.0\%$ in group IV and lowest as $11.6\%$ in group II (basal diet + Cd). The body weight, in the case of single dose of $100{\mu}g$ of cadmium showed no increase untill 5th day from acute poisoning. While in case of free-intake of 50ppm containing cadmium, it showed very slight increase through all breeding period. The weight ratio of organ to body were lowest in liver of group II in both occasions. The most of cadmium administered was excreated in feces within 2 days after single dose $100{\mu}g$ cadmium. The contents of cadmium in all tissues were significantly high in each group comparing to control group as liver, kidney, spleen and muscle of group II which showed the highest level in both occasions of $100{\mu}g$ one dose and free-intake of 50ppm containing cadmium fluid, and higher in group II of the occasion with $100{\mu}g$ single dose, and in group V of the occasion of 50ppm containing cadmium fluid free-inatke for skin with hair. And the content of cadmium in tissues is generally higher in the occasion of 50ppm containing cadmium free-intake than $100{\mu}g$ single dose. From the above results I conclude that the addition of casein, calcium and suet in cadmium containing diet is effective to inhibtion of intestinal absorption of cadmium by particularly, calcium.

• Environmental Analysis Health and Toxicology
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• v.3 no.3_4
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• pp.1-8
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• 1988

Experiment was performed to investigate the immunotoxicity of cadmium administered orally and the effect of ginseng petroleum ether fraction on it. Mice were given 3, 30, or 300 ppm cadmium as cadmium chloride orally in the drinking water and injection of ginseng petroleum ether fraction intraperitoneally for 4 weeks. Mice were sensitized and challenged u'ith sheep red blood cells (5-HBC). Immune response was evaluated by delayed type hypersensitivity (DTH), Rosette forming cell (RFC), phagocyte activity, and natural killer cell activity (NK cell activity). In the present study, cadmium suppressed the cellular immunity, It also depressed phagocyte activity very significantly in all cadmium-administered groups, NK cell activity in the cadmium-300 ppm administered group. Ginseng petroleum ether fraction showed restoring effect on the decrease in RFC by cadmium-administration. Remarkably, it showed very significant restoring effect on the depression of phagocyte activity induced by cadmium-administration. From this result, we suppose that the anti-tumor effect of ginseng ether or petroleum ether extract, which has been reported by some other researchers, is mainly due to the increase of phagocyte activity by it's administration.

• Journal of the Korean Chemical Society
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• v.52 no.2
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• pp.133-139
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• 2008

A new sensitive and selective spectrophotometric method for determination of trace amounts of cadmium using a polyvinyl chloride membrane containing bis-(2-ethylhexyl)phthalate as a solid phase extraction medium was investigated. Bis-(2-ethylhexyl)phthalate has used as a plasticizer. Cd(II) in an aqueous solution was trapped on the membrane in the form of colorful Cd (II)-I- - MG complexes (which MG is malachite green) and the cadmium complex was concentrated in the membrane. The absorbance of the green membrane was measured at 629 nm using a spectrophotometer, and then, the concentration of the cadmium was calculated using a calibration curve, which expressed the relationship between the Cd(II) concentration and the membrane absorbance after coloring for 25 min. The calibration curve was linear in the range of 10-760 μgL-1 cadmium in the test solution. The detection limit based on the 3Sbl criterion was 1.8199 μgL-1 and the relative standard deviations (RSD) were less than 4 % (n=5). The proposed method has been successfully applied to the determination of trace amounts of cadmium in the Tadjan River water sample (Sari-Iran), and the mean value of 28.7 μgL-1 was obtained.

• Nutrition Research and Practice
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• v.7 no.1
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• pp.22-25
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• 2013

This study was performed in order to investigate the effects of taurine on cadmium poisoning in muscle, gill, and bone tissues of wild goldfish. For this experiment, 80 wild goldfish were divided into four experimental groups: 0.3 mg/L of cadmium and 0 mg/L of taurine (Group I), 0.3 mg/L of cadmium and 20 mg/kg of taurine (Group II), 0.3 mg/L of cadmium and 40 mg/L of taurine (Group III), and 0.3 mg/L of cadmium and 80 mg/L of taurine (Group IV). The results were as follows: The cadmium concentration in muscle tissue of wild goldfish was 0.65-3.21 mg/kg wet wt in Group I, whereas it decreased in Group IV. Levels of cadmium in gill tissue of wild goldfish were 16.57-42.39 mg/kg wet wt in Group I, 15.23-43.01 mg/kg wet wt in Group II, 15.11-39.56 mg/kg wet wt in Group III, and 13.15-38.55 mg/kg wet wt in Group IV (P < 0.05), suggesting that the cadmium concentration decreased in the experimental groups compared to control. The cadmium concentration in bone tissue of wild goldfish after 28 days was 0.52-9.75 mg/kg in Group II, whereas it increased in Group III (P < 0.05). In conclusion, taurine may have a preventive effect against cadmium accumulation in biological tissues.

• Environmental Analysis Health and Toxicology
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• v.19 no.4
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• pp.389-399
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• 2004

Metallothionein (MT), a small protein molecule which can bind or release metal ions, is involved in the regulation of cellular metal homeostasis. This study was investigated the accumulation of cadmium in blood, tissue (liver, kidney and brain), and the effect of cadmium on several key genes (MT-I, MT-II, ZnT-1) in zinc metabolism in the mouse. Mouses weighing 20∼25 g were randomly assigned to control and cadmium treated group (Cd group). Cd group was intraperitoneally injected with cadmium 2, 4, 8 mg/kg and control group was administerd with saline. Mouses of each group were sacrificed by decapitation 4 hours after the administration of cadmium. Cadmium contents in blood, liver, kidney and brain were increased by a dose-dependent manner. Accumulation of cadmium was mainly occurred in liver and kidney. Induction of MT-I and MT-II protein was increased, but ZnT-1 expression was decreased in a dose-dependent manner by the treatment of 2∼8 mg/kg cadmium. These results suggested that cadmium can be transported to brain and alter the expression of several key genes in zinc homeostasis.

• Journal of the Korean Chemical Society
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• v.58 no.2
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• pp.234-238
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• 2014

• Journal of the Korean Chemical Society
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• v.63 no.5
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• pp.392-397
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• 2019