Ni Luh Gede Ratna Juliasih, Ni Luh Gede Ratna Juliasih and Rinawati, Rinawati and Hidayat, Diky and Pirdaus, Purna (2017) Verification method of metals analysis (Cd, Cr, Cu, Ni, Co, and Mn) in water samples using Inductively Coupled Plasma-Optical Emission Spectrometry. In: Seminar Nasional Sains dan Teknologi (Senastek) IV, Bali, Indonesia 2017, 14-15 Desember 2017, Bali, Indonesia. (Unpublished)

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Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) is one of the methods for metal analysis in water samples. The main aspect for the confidence of the measurements is the validity of the method, therefore, validation or verification of the method is required. The verification of metals analysis (Cd, Cr, Cu, Ni, Co, and Mn) in surface water has been done to evaluate the performance of the method in our laboratory based on the US. EPA Method 200.7. The results show that the linearity of the method obtained from the regression coefficient is greater than 0.995. The precision of the method was obtained from 3.145 to 4.345% or below 5%. The accuracy of the method, which were obtained from recovery of spiking analyte has provided a recovery of 80-110% for 1 mg/L analyte, as required by the AOAC. The method was applied to analysis metals in water samples from Palang Besi, Way Kuala, and Muara Kahuripan River. The concentration of Cd, Cr, Cu, and Co in these samples are below method detection limit (MDL). The Ni concentration in Palang Besi River is below MDL, whereas the Ni concentration in Way Kuala is 0.011 mg/L and Muara Kahuripan is 0.013 mg/L. The Mn concentration of Palang Besi, Way Kuala, and Muara Kahuripan River are 0,026; 0.07; and 0.172 mg/L, respectively. Overall, the performance of our method is suitable for analysis of metals in surface water.

Item Type: Conference or Workshop Item (Speech)
Uncontrolled Keywords: verification method, linearity, limit detection, accuracy, precision
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Prodi Kimia
Depositing User: Dr. Eng. NI LUH GEDE RATNA JULIASIH
Date Deposited: 25 Jun 2018 02:32
Last Modified: 25 Jun 2018 02:32

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