Masters Theses

Ngo The Hung

Abstract

"Complexometric titrations of calcium, zinc and lead with polyaminocarboxylic acids: ethylenediaminetetraacetic acid (EDTA), 1,2-diaminocyclohexanetetraacetic acid (DCTA), ethyleneglycol-bis(2-aminoethylether)tetraacetic acid (EGTA) and tetraethylenepentamine (tetren) have been investigated and compared in the following organic solvents: methanol, dimethyl formamide, dimethyl sulfoxide and methyl ethyl ketone. Various end point detection methods have been used: direct visual titration with metallochromic indicators and instrumental detection by photometry, potentiometry (mercury electrode and lead ion selective electrode) and amperometry. Calcium, zinc and lead can be determined up to trace levels (ppm) under specific conditions. A concrete application of this thesis is the determination of zinc or calcium in a sample of polystyrene within a few minutes while the classical methods will necessitate several hours"--Abstract, page ii.

Advisor(s)

Carroll, William R.

Committee Member(s)

Webb, William H.
Bolter, Ernst

Department(s)

Chemistry

Degree Name

M.S. in Chemistry

Publisher

University of Missouri--Rolla

Publication Date

1972

Pagination

ix, 82 pages

Rights

© 1972 Ngo The Hung, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Complexometric titration
Nonaqueous solvents

Thesis Number

T 2732

Print OCLC #

6033645

Electronic OCLC #

883316066

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