By G. Svehla
Spot checks are outlined as an analytical strategy which permits the analyst to complete passable semi-micro, micro and ultra-micro assessments with basic apparatus and minimal intake of pattern and time. those uncomplicated checks utilize the colour and smell of the natural compound within the initial level of study and likewise the identity of convinced vapors and gases advanced in the course of pyrolysis. quantity X comprises chapters. the 1st, on natural spot try out research, is complementary to P.W. West’s shorter bankruptcy on inorganic spot attempt strategies, released in quantity IA greater than twenty years in the past. the second one bankruptcy provides a short heritage of analytical chemistry. in addition to being a necessary resource of references to early analytical paintings, this bankruptcy makes so much fun examining.
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Extra info for Organic Spot Test Analysis The History of Analytical Chemistry
S c h r a m m , M o n a t s h . C h e m . , 1 0 6 (1975) 73 74 75 159. L. L é g r â d i , M i k r o c h i m . A c t a , ( 1 9 7 0 ) 3 3 . F . Feigl a n d R. Zappert, s e e F. Feigl a n d V . A n g e r , S p o t T e s t s in Organic Analysis, Elevier, A m s t e r d a m , 7 t h e d n . , 1 9 6 6 , p . 1 7 6 . F . F e i g l , V . G e n t i l a n d C. S t a r k - M a y e r , M i k r o c h i m . A c t a , ( 1 9 5 7 ) 3 4 2 . L . M â z o r , S z e r v e s k é m i a i A n a l i z i s . I. M i n o s é g i A n a l i z i s , M u s z a k i K o n y v k i a d o , Budapest, 1 9 6 1 , p.
See test procedure 35, p. ) (XXVIII) PHOSGENE Phosgene reacts rapidly with alkyl- and aryl-hydrazine to form symmetric carbohydrazides owing to its two mobile chlorine atoms. As diphenylcarbazide forms a deep violet chelate with cupric ions, this could serve as a test for phosgene [ 1 7 2 ] . C 6H 5- N H - N H 2 C 6H 5— N H - N H 2 C 6H 5- N H - N H αχ + CO CI /C O + 2 HCI C 6H . 5- N H - N H (XXIX) PIPERIDINE Piperidine [ 1 7 3 ] , through its reactive N H 2 group, reacts with 1,2naphthoquinone-4-sulfonate to yield intensely colored brick-red p-quinoidal condensation products.
1 9 6 6 , p. 6 4 . E. Jungreis, s e e F. Feigl a n d V. A n g e r , S p o t T e s t s in Organic Analysis, Elsevier, A m s t e r d a m , 7 t h e d n . , 1 9 6 6 , p . 6 5 . F . F e i g l , D . H a g e n a u e r - C a s t r o a n d E. J u n g r e i s , T a l a n t a , 1 ( 1 9 5 8 ) 8 0 . D. G o l d s t e i n , see F. Feigl a n d V. Anger, S p o t Tests in Organic Analysis, Elsevier, A m s t e r d a m , 7 t h e d n . , 1 9 6 6 , p. 7 4 . F. Feigl and D. Goldstein, see F. Feigl a n d V. Anger, S p o t Tests in Organic A n a l y s i s , Elsevier, A m s t e r d a m , 7 t h e d n .