電気透析による生体試料中金属の抽出法に関する研究

フォーマット:

論文

責任表示:

今成, 登志男 ; 大久保, 登 ; 早川, 和一 ; 宮崎, 元一

言語:

日本語

出版情報:

日本分析化学会 = The Japan Society for Analytical Chemistry, 1979-01-01

著者名:

• 今成, 登志男
• 大久保, 登
• 早川, 和一
• 宮崎, 元一

掲載情報:

分析化学 = Japan analyst

ISSN:

0525-1931      

巻:

28

通号:

5

開始ページ:

285

終了ページ:

288

バージョン:

publisher

概要:

生体試料中の金属を電気透析試料調製器によって陽イオンとして直接抽出する方法(A法)とEDTA-金属錯体として陰イオンとして抽出する方法(B法)について条件の検討を行った. A法の条件は泳動液0.05N酢酸,電流密度15mA/cm2,抽出時間(20～40)分,B法の条件は泳動液0.05N水酸化アンモニウム-1m M EDTA,電流密度20mA/cm2,抽出時問(20～40)分であった.A法では鉄(III),銅(II)の回収率80%,亜鉛(II)の回収率は90%,一方B法について … は鉄(III),亜鉛(II)の回収率100%,銅(II)の回収率は95%であった.たん白質として牛血清アルブミン,電解質として塩化ナトリウムの共存の影響を調べた後,B法を血しょう中のアルブミン結合亜鉛の分析に応用した. The extraction of metals from biological materials by an electrodialytic sample preparator was studied. Two procedures are proposed in this method : one depends on the extraction of metals as cationic ions (Mode A) and the other depends on the extraction of metal-EDTA complexes as anionic ions (Mode B). The basic conditions for Mode A are : carrier solution; 0.05 N CH3COOH, current density; 15 mA/cm2, extraction time; (2040) min. The conditions for Mode B are : carrier solution; 0.05 N NH4OH-1 mM EDTA, current density; 20 mA/cm2 and extraction time; (2040)min. The recoveries of Fe(III), Cu(II) and Zn(II) in Mode A were 90, 80 and 90%, and in Mode B the recoveries were 100, 95 and 100% respectively. The effects of electrolytes and proteins on the extraction of metals were examined, and the application of Mode B for the determination of albumin bound zinc in human plasma was carried out as follows : the supernatant containing albumin bound zinc was obtained by polyethylene glycol treatment and subjected to electrodialysis for 40 min according to the conditions described in Mode B. Albumin bound zinc in the extract was determined by atomic absorption spectrometry (AAS). Total plasma zinc was measured according to direct dilution method by AAS and α2-macroglobulin bound zinc was obtained by the difference. 続きを見る

URL:

http://hdl.handle.net/2297/44504