Fehlergrenzen bei der direkten photometrie von papierchromatogrammen

✍ Scribed by Gerhard Ackermann; Hans-Jürgen Wiesner

• Book ID: 104145438
• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 568 KB
• Volume: 33
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(00)98653-9

✦ Synopsis

Verification

of the errors in measurement made in the direct photometric evaluation of paper chromatograms (modified wedge-shaped strips) .shows that '&ii a part of. the calibration curve, depending pn the cations 'being determined and:on

the reagent, is suitable. Under optimal conditions' the standard deviation for repeat determinations may ,be' expected to lie between 5 and xo P/0, 'while thc'~&parative standard deviation may, be expected' to be greater' than IO %a The accuracy ,of +he measurements can'be increased by using internal standards', *.