scholarly journals Determination of a Small Amount of Iodide by Atomic Absorption Spectrophotometry Using a Cadmium Hollow Cathode Lamp

1969 ◽  
Vol 42 (4) ◽  
pp. 956-960 ◽  
Author(s):  
Takahiro Kumamaru
Keyword(s):  
Atomic Absorption ◽  
Hollow Cathode ◽  
Atomic Absorption Spectrophotometry ◽  
Hollow Cathode Lamp ◽  
Absorption Spectrophotometry

scholarly journals Analisis Logam Kromium (Cr) Pada Sediaan Perona Pipi (Blush On) Secara Spektrofotometri Serapan Atom

2019 ◽  
Vol 5 (3) ◽  
pp. 185
Author(s):  
Regina Andayani ◽  
Siti Yulia Rahma ◽  
Martinus Martinus
Keyword(s):  
Heavy Metal ◽  
Nitric Acid ◽  
Atomic Absorption ◽  
Hollow Cathode ◽  
Atomic Absorption Spectrophotometry ◽  
Atomic Absorption Spectrophotometer ◽  
Sample Solution ◽  
Hollow Cathode Lamp ◽  
Absorption Spectrophotometry

ABSTRAKKromium merupakan logam berat yang dilarang penggunaannya dalam sediaan kosmetik. Efek logam kromium apabila terpapar pada kulit dapat menyebabkan dermatitis, oedema dan borok yang dapat meluas pada kulit. Analisis logam kromium (Cr) pada sediaan perona pipi (Blush On) secara Spektrofotometri Serapan Atom telah dilakukan. Masing-masing sampel didestruksi terlebih dahulu dengan cara destruksi kering, kemudian sampel dilarutkan dengan asam nitrat 6 N, larutan sampel diukur serapannya dengan alat Spektrofotometer Serapan Atom menggunakan lampu katoda berongga kromium pada panjang gelombang 357,9 nm. Hasil dari penelitian ini adalah sampel merek IZ, VV, KS, MC terdeteksi mengandung logam kromium dengan kadar berturut-turut adalah 10,05 ± 0,05 µg/g; 6,74 ± 0,02 µg/g; 28,95 ± 0,19 µg/g; 13,52 ± 0,63 µg/g. Data menunjukan bahwa adanya kromium pada semua sampel.Kata kunci: logam; kromium; perona pipi; spektrofotometri serapan atom ABSTRACTChromium is a heavy metal which is prohibited from using it in cosmetic preparations. Effects of chromium metal, when exposed to the skin, can cause dermatitis, oedema and ulcers that can extend to the skin. Analysis of chromium (Cr) metal in blush preparations by Atomic Absorption Spectrophotometry was carried out. Each sample was first destructed by dry destruction, then the sample was dissolved with 6 N nitric acid, the absorption of the sample solution was measured by an atomic absorption spectrophotometer using a chromium hollow cathode lamp at a wavelength of 357.9 nm. The results showed that all samples under the IZ, VV, KS and MC brands were detected containing chromium metal with levels of 10.05 ± 0.05 μg/g respectively; 6.74 ± 0.02 µg/g; 28.95 ± 0.19 µg/g; 13.52 ± 0.63 µg/g. Data shows that the presence of chromium in all samples.Keywords: metal; chromium; blush; atomic absorption spectrophotometry. 

Two Test Methods for Determining the Relative Background Emission from a Hollow Cathode Lamp

1992 ◽  
Vol 46 (9) ◽  
pp. 1400-1404 ◽  
Author(s):  
Paddy Fleming
Keyword(s):  
Atomic Absorption ◽  
Hollow Cathode ◽  
Atomic Absorption Spectrophotometry ◽  
Test Methods ◽  
Hollow Cathode Lamp ◽  
Absorption Spectrophotometry ◽  
Background Emission

This paper describes two test methods, based respectively on direct transmittance spectrometry and transmittance ratio spectrometry, to determine the relative background emission from the hollow cathode lamps used in atomic absorption spectrophotometry.

Determination of Minor Nutrients in Fertilizers by Atomic Absorption Spectrophotometry: Second Collaborative Study

1965 ◽  
Vol 48 (6) ◽  
pp. 1100-1103
Author(s):  
C H Mcbride
Keyword(s):  
Atomic Absorption ◽  
Collaborative Study ◽  
Atomic Absorption Spectrophotometry ◽  
Absorption Method ◽  
Atomic Absorption Method ◽  
Absorption Spectrophotometry ◽  
Minor Nutrients

Abstract The atomic absorption method studied last year was re-examined and extended to include calcium and sodium. The procedures were submitted to 16 collaborators for determination of Ca, Cu, Fe, Mg, Mn, Na, and Zn. Results for Ca and Na were discouraging; further study is recommended.

Comparison of Methods for Determining Biuret in Urea

1979 ◽  
Vol 62 (1) ◽  
pp. 153-159
Author(s):  
Luis F Corominas ◽  
Victor M Boy ◽  
Manuel Guijosa
Keyword(s):  
Atomic Absorption ◽  
Spectrophotometric Determination ◽  
Atomic Absorption Spectrophotometry ◽  
International Organization ◽  
Comparison Of Methods ◽  
Definite Advantage ◽  
Absorption Spectrophotometry ◽  
Alternative Procedures ◽  
Aoac Method

Abstract The official first action AOAC method for the spectrophotometric determination of biuret in urea, 2.072—2.074, was compared with official first action AOAC method 2.C01-2.C03 (atomic absorption spectrophotometry), 2 simplified versions of 2.072-2.074, and modified versions of 2 alternative procedures of the International Organization for Standardization. Three synthetic urea samples (0.3, 1.4, and 3.0% biuret) and 1 commercial urea sample (1.0% biuret) were analyzed. The methods proved to be equivalent and none showed a definite advantage over 2.072-2.074. The purification of biuret and the interference by ammonia are also discussed.

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