A Dual Wavelength Atomic Absorption Spectrophotometer Using a Pulsed Hollow Cathode Lamp

1977 ◽  
Vol 31 (2) ◽  
pp. 150-155 ◽  
Author(s):  
Tsutomu Araki ◽  
Teruo Uchida ◽  
Shigeo Minami
Keyword(s):  
Atomic Absorption ◽  
Hollow Cathode ◽  
Emission Spectra ◽  
Background Correction ◽  
Dual Wavelength ◽  
Atomic Absorption Spectrophotometer ◽  
Transient Signal ◽  
Line Profiles ◽  
Time Resolved ◽  
Hollow Cathode Lamp

A novel use of pulsed hollow cathode lamps for the purpose of background correction with a dual wavelength atomic absorption spectrophotometer is described. The pulsed hollow cathode lamp in conjunction with a transient signal gating system behaves as if the analyte source and the background correction source are firing alternately in time. Determinations of Fe, Mg, and Cd are carried out in order to evaluate the performance in practical analyses. Procedures and results on the time-resolved measurement of emission spectra and resonance line profiles from several kinds of pulsed hollow cathode lamps are also demonstrated in detail.

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. 

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