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Environmental studies of arsenic and...

Chiu, Kong-Hwa.

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Environmental studies of arsenic and antimony species in a Blackfoot disease area and near a chemical reprocessing plant.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Environmental studies of arsenic and antimony species in a Blackfoot disease area and near a chemical reprocessing plant./
作者:	Chiu, Kong-Hwa.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 1995,
面頁冊數:	186 p.
附註:	Source: Dissertation Abstracts International, Volume: 56-11, Section: B, page: 6073.
Contained By:	Dissertation Abstracts International56-11B.
標題:	Analytical chemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9606357

Environmental studies of arsenic and antimony species in a Blackfoot disease area and near a chemical reprocessing plant.
Chiu, Kong-Hwa.

Environmental studies of arsenic and antimony species in a Blackfoot disease area and near a chemical reprocessing plant. - Ann Arbor : ProQuest Dissertations & Theses, 1995 - 186 p.

Source: Dissertation Abstracts International, Volume: 56-11, Section: B, page: 6073.

Thesis (Ph.D.)--University of Idaho, 1995.

The toxicity and bioavailability of arsenic and antimony in the environment depend on their species. Two case studies concerning the effects of arsenic and antimony species in the environment will be discussed in this study. The first case concerns the distribution of arsenic species in the ground water of the Blackfoot disease (BFD) area in Taiwan. BFD is a peripheral vascular disease found in a limited area on the southwest coast of Taiwan. The ground waters in the BFD area contain high concentrations of arsenic with $\rm As\sp{3+}.$ On the average, $\rm 671 \pm 149\ \mu g/L$ of total dissolved arsenic was measured; the predominant arsenic species in the well waters of the BFD is $\rm As\sp{3+}$ with an average $\rm As\sp{3+}/As\sp{5+}$ ratio of 2.6. Ultrafiltration experiments indicate that the dissolved arsenic species can be roughly divided into two groups, one with molecular weight $$300,000 Da (11%). The significance of this arsenic speciation study to our understanding of BFD will be discussed. The second case is related to an environmental study of the fission product $\sp{125}$Sb (half-life 2.7 years) around the Idaho chemical processing plant (ICPP) at the Idaho National Engineering Laboratory (INEL). Data on the distribution and migration of $\sp{125}$Sb in the desert environment around ICPP are discussed. The highest radioactivity of $\sp{125}$Sb is in the sagebrush leaves. Its radioactivity in the soil is in inverse proportion to the depth of soil, and the migration speed downward to the water table is quite slow so as not to affect the environment in that area. About 30% of $\sp{125}$Sb could be leached from sagebrush leaves, and less than 2% is trivalent antimony. An ion-exchange chromatography method using AG 50W-X8 cation resin and AG 1-X8 anion resin in the same column, with the anion resin packed at the bottom, is developed for simultaneous separation of arsenic and antimony species $\rm(As\sp{3+},\ As\sp{5+},\ Sb\sp{3+},\ and\ Sb\sp{5+})$ in aqueous samples. The detection limit is in the ppb level.Subjects--Topical Terms:

3168300
Analytical chemistry.

Environmental studies of arsenic and antimony species in a Blackfoot disease area and near a chemical reprocessing plant.
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100 1 $a Chiu, Kong-Hwa. $3 3283502
245 1 0 $a Environmental studies of arsenic and antimony species in a Blackfoot disease area and near a chemical reprocessing plant.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 1995
300 $a 186 p.
500 $a Source: Dissertation Abstracts International, Volume: 56-11, Section: B, page: 6073.
500 $a Major Professor: Chein M. Wai.
502 $a Thesis (Ph.D.)--University of Idaho, 1995.
520 $a The toxicity and bioavailability of arsenic and antimony in the environment depend on their species. Two case studies concerning the effects of arsenic and antimony species in the environment will be discussed in this study. The first case concerns the distribution of arsenic species in the ground water of the Blackfoot disease (BFD) area in Taiwan. BFD is a peripheral vascular disease found in a limited area on the southwest coast of Taiwan. The ground waters in the BFD area contain high concentrations of arsenic with $\rm As\sp{3+}.$ On the average, $\rm 671 \pm 149\ \mu g/L$ of total dissolved arsenic was measured; the predominant arsenic species in the well waters of the BFD is $\rm As\sp{3+}$ with an average $\rm As\sp{3+}/As\sp{5+}$ ratio of 2.6. Ultrafiltration experiments indicate that the dissolved arsenic species can be roughly divided into two groups, one with molecular weight $$300,000 Da (11%). The significance of this arsenic speciation study to our understanding of BFD will be discussed. The second case is related to an environmental study of the fission product $\sp{125}$Sb (half-life 2.7 years) around the Idaho chemical processing plant (ICPP) at the Idaho National Engineering Laboratory (INEL). Data on the distribution and migration of $\sp{125}$Sb in the desert environment around ICPP are discussed. The highest radioactivity of $\sp{125}$Sb is in the sagebrush leaves. Its radioactivity in the soil is in inverse proportion to the depth of soil, and the migration speed downward to the water table is quite slow so as not to affect the environment in that area. About 30% of $\sp{125}$Sb could be leached from sagebrush leaves, and less than 2% is trivalent antimony. An ion-exchange chromatography method using AG 50W-X8 cation resin and AG 1-X8 anion resin in the same column, with the anion resin packed at the bottom, is developed for simultaneous separation of arsenic and antimony species $\rm(As\sp{3+},\ As\sp{5+},\ Sb\sp{3+},\ and\ Sb\sp{5+})$ in aqueous samples. The detection limit is in the ppb level.
590 $a School code: 0089.
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650 4 $a Environmental science. $3 677245
690 $a 0486
690 $a 0768
710 2 $a University of Idaho. $3 718915
773 0 $t Dissertation Abstracts International $g 56-11B.
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791 $a Ph.D.
792 $a 1995
793 $a English
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