It has always been the desire to get away
from the use of hydrogen sulphide (H2S) in the laboratory.
In the macro system Brockman (16) developed a method which
dispensed with its use. In the June issue of Journal of
Chemical Education for 1934 there appeared a system developed
by Gerstenzang (17) which dispensed with the use of HaS in
micro analysis. With the idea that the system might prove useful
here in the University, I undertook a semi-quantitative
investigation of it, under the direction of Professor W.0.
Walker, to determine the sensitivity of the tests.
Solutions of the cations were made up in 500 c.c.
bottles so that each c.c. contained 20 mg. of the cation.
Smaller dropping bottles were provided so that 1 mg. quantities
were easily available. Test reagents were made up according
to Treadwell-Hall (19) as specified in the instructions.
In all procedures the instructions were followed closely
in the first attempts. If difficulties were found in
procedure, quantities were varied in an attempt to clear
up or overcome the difficulty. / Thesis / Master of Arts (MA)
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/29634 |
| Date | January 1935 |
| Creators | Duncan, Arthur |
| Contributors | Walker, W. O. |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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