+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Distribution and chemical state of heavy metal ions absorbed by chlorella regularis cells

, : Distribution and chemical state of heavy metal ions absorbed by chlorella regularis cells. Agricultural & Biological Chemistry 45(4): 903-908

Experiments were undertaken to determine whether the distribution of Cu, Cd and uranyl ions in Chlorella cells differed with different heavy metal ions. The amounts of these 3 metals in each cell fraction were in the following decreasing order: intracellular soluble fraction > intracellular particle fraction .mchgt. cell wall fraction. Heavy metal ions were abundant in the intracellular soluble fraction and only 3-5% of the heavy metal ions were in the cell wall fraction. The distribution of uranyl ion in Chlorella cells differed from both that of Cu ion and Cd ion. The distribution of heavy metal ions in the intracellular soluble fraction was investigated in detail by gel filtration, which showed that Cu ion was present in both the high- and low-MW fractions, while Cd and uranyl ions were present only in the high-MW fraction. Substances combined with heavy metal ions in Chlorella cells differed with different heavy metal ions. The chemical state of cupric ion absorbed in cells was studied in detail using ESR. The values of g.dblvert. and A.dblvert. (Cu) of cupric ion showed that cupric ion was coordinated by 2 N and 2 O atoms.


Other references

Drumont, Alain., 1996: The description of a new species of Brachymitra from Tanzania Coleoptera, Cetoniidae Description dune nouvelle espece de Brachymitra de Tanzanie Coleoptera, Cetoniidae. Coleopteres. Avril; 25: 48-51

Kenyon, F.E., 1968: Studies in female homosexuality. IV. Social and psychiatric aspects. British Journal of Psychiatry 114(516): 1337-1343

Cook, R.S., 1959: Costs and returns from milk production in the southern province in. 1956/57. The net costs of milk production in 40 herds (average size 32 cows) during 1956-57 were <pounds>94 105. per cow and 29 .6d. per gal. comprising: food, 52.8%; labour, 23.9%; herd depreciation, 6.9% and miscellaneous, 16.4%. Average yield per...

Dilova, P.; Popova, T.; Atanassova, K.; Samuilova, E., 2010: Family planning among gipsy women. Family is the major social unit of gipsy society. The basic value in ethno-culture of gypsies is children. As in almost all aspects of health, regarding the reproduction health and access to health care gipsy population do not have good enough ind...

Lu, S.L.o, Y.T.rner,, H., 2007: Efficacy of sodium chlorite as an inhibitor of enzymatic browning in apple slices. Sodium chlorite (SC) is an effective sanitizer for inhibiting microbial growth. This investigation was conducted to determine the efficacy of SC as a browning control agent for use on fresh-cut apple slices, applied alone, or in conjunction with o...

Noboru Nakamura; Keiji Misawa; Masao Kitamura; Akimasa Masuda; Seiko Watanabe; Koshi Yamamoto, 1990: Highly fractionated REE in the Hedjaz (L) Chondrite; implications for nebular and planetary processes. Abundances of REE, Sr, Rb, K, Ca and Mg in two whole-rock fragments, two lithic fragments and three chondrules of the Hedjaz (L3) chondrite were determined by isotope dilution mass spectrometry. One whole-rock fragment shows a step pattern with th...

Martinek, V., 1987: The influence of the hatching of one year generation on the increased population levels of web spinning sawfly imagoes of the genus cephalcia pz. hymenoptera pamphiliidae. In the years 1976-1984, the coincident hatching was studied of web-spinning sawfly imagoes of the genus Cephalcia Pz. with different time of ontogenetic development at several select localities in the CSR[Czechoslovakia] situated at various altitu...

Gastel, B.; Palen, J., R., 1999: Health writer's handbook (book review). BioScience 49(7): 9-80

Zhang, Q.; Rosen, C.; Wastney, M.E.; Sato, M.; Martin, B.R.; Weaver, C.M., 1999: Profile of IGF-I and calcium accretion with age in female rats. Journal of Bone & Mineral Research 14(SUPPL 1): S336, Sept

Kaseb, H.O.; Fohrer-Ting, H.; Lewis, D.W.; Lagasse, E.; Gollin, S.M., 2016: Identification, expansion and characterization of cancer cells with stem cell properties from head and neck squamous cell carcinomas. NlmCategory="UNASSIGNED">Head and neck squamous cell carcinoma (HNSCC) is a major public health concern. Recent data indicate the presence of cancer stem cells (CSC) in many solid tumors, including HNSCC. Here, we assessed the stem ce...