کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10559912 | 969675 | 2011 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sequential injection spectrophotometric determination of tetracycline antibiotics in pharmaceutical preparations and their residues in honey and milk samples using yttrium (III) and cationic surfactant
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A sequential injection analysis (SIA) spectrophotometric method for determining tetracycline (TC), chlortetracycline (CTC) and oxytetracycline (OTC) in different sample matrices were described. The method was based on the reaction between tetracyclines and yttrium (III) in weak basic micellar medium, yielding the light yellow complexes, which were monitored at 390, 392 and 395 nm, respectively. A cationic surfactant, cetyltrimethylammonium bromide (CTAB) was used to obtain the micellar system. The linear ranges of calibration graphs were between 1.0 Ã 10â5 and 4 Ã 10â4 mol Lâ1, respectively. The molar absorptivities were 5.24 Ã 105, 4.98 Ã 104 and 4.78 Ã 104 L molâ1 cmâ1. The detection limits (3Ï) were between 4.9 Ã 10â6 and 7.8 Ã 10â6 mol Lâ1 whereas the limit of quantitations (10Ï) were between 1.63 Ã 10â5 and 2.60 Ã 10â5 mol Lâ1 the interday and intraday precisions within a weak revealed as the relative standard deviations (R.S.D., n = 11) were less than 4%. The method was rapid with a sampling rate of over 60 samples hâ1 for the three drugs. The proposed method has been satisfactorily applied for the determination of tetracycline and its derivatives in pharmaceutical preparations together with their residues in milk and honey samples collected in Chiang Mai Province. The accuracy was found to be high as the Student's t-values were found to be less than the theoretical ones. The results were compared favorably with those obtained by the conventional spectrophotometric method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 84, Issue 5, 15 June 2011, Pages 1401-1409
Journal: Talanta - Volume 84, Issue 5, 15 June 2011, Pages 1401-1409
نویسندگان
Wish Thanasarakhan, Senee Kruanetr, Richard L. Deming, Boonsom Liawruangrath, Sunantha Wangkarn, Saisunee Liawruangrath,