โ Scribed by Haldane, J. S.
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
dinicthyl derivntive of hydro ninone phthnlcin nnd the metlivl derivntive of ~lien&hthnlein. nnd nlthouali the littor only contnineh half \*the amount of m e t h o ~y group, tlie compounds fornied were more unstnble. It It 11nd becii in cluily nsc ns n control nppnratnn ill.
The technique of differential thermal analysis (DTA) was first proposed, in a rather crude manner, by LE CHATELILZR in 18871. Since its conception, DTA has been a useful tool in the fields of metallurgy, ceramics, geology, and chemistry. However, only in recent years has this technique been seriousl
The apparatus described below affords a more rapid and sensitive niethod for the detection of mustard gas than any which the writer has hitherto seen. Although based on the sodium iodo-plathate reaction, it differs from the official modifications of this iiiethod in several saiiiple, and a bubbler.
ditions described above for the direct method. Calibration curves for thiamphenicol and for its trimethylsilyl ether, based on measurement of peak area by planirneter, were linear throughout the range of 0.05 to 0.2 pg and the range of o to 0.02 pg, respectively. The results of recovery experiments