Spectrophotometric simultaneous determination of nickel, cobalt and copper by orthogonal signal correction- partial least squares
Article Type:
Research/Original Article (بدون رتبه معتبر)
Abstract:
A method for the simultaneous spectrophotometric determination of nickel, cobalt and copper based on the formation of their complexes with 2-(2-Thiazolylazo)-p-Cresol (TAC) in micellar media of Triton X-100 is proposed. The absorbance spectra were recorded in the range of 500 to 800 nm. The linear concentration range for nickel, cobalt and copper in solution calibration sets were 0.05–1.80, 0.10–6.41 and 0.10–6.54 μg/ml, respectively. The effects of experimental parameters such as pH, time, concentration of ligand and surfactant on the sensitivity of method were investigated. The data obtained from the experiments were processed by the partial least squares (PLS), orthogonal signal correction-partial least squares (OSC-PLS) and principle component-back propagation artificial neural network (PC-BPANN). A set of synthetic mixtures of nickel, cobalt and copper was evaluated and the results obtained by each chemometric approaches were compared with different testing methods. The OSC-PLS method was selected because afforded better results than the others. The method was satisfactorily applied for determination of nickel, cobalt and copper in alloy samples. The accuracy was determined using comparing the results to the reference values and also independent analysis by flame atomic absorption spectrometry.
Language:
English
Published:
Journal of the Iranian Chemical Research, Volume:5 Issue: 4, Autumn 2012
Pages:
255 to 263
magiran.com/p1863425  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!