The Utilization of Nitrogen Gas as a Carrier Gas in the Determination of Hg Ions Using Cold Vapor-Atomic Absorption Spectrophotometer (CV-AAS)

Panggabean, Aman Sentosa; Pasaribu, Syahril; Kristiana, Farida

doi:10.22146/ijc.23092

Cited by 8 publications

(10 citation statements)

References 18 publications

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“…The utilization of H2SO4 and HNO3 as a giver of acidic does not provide maximum results. This because both acids are oxidizing agents so that the oxidation-reduction reaction process in the formation of a metal hydride in the gas-liquid separator disturbed (Panggabean et al, 2018). For further work, this acid is used in the hydride formation process.…”

Section: Optimization Of Acid Type Usedmentioning

confidence: 99%

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Gas-Liquid Separator Modified on CV-AAS System for Determination of Total Hg in the Industrial Wastewater Samples

Sujito¹,

Pasaribu

Wirawan

et al. 2022

molekul

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The research about the utilization of modified gas-liquid separators in the determination of Hg ions by using the Cold Vapor Atomic Absorption Spectrophotometer (CV-AAS) method has been done. To optimize the measurement results, several parameters that affect the hydride generator have been studied. Some specified essential parameters are the type and concentration of acid, the level of SnCl2 as a reducing agent, sample volume and the analytical performance such as linearity (r), detection limit (LOD) and quantitation limit (LOQ), repeatability (% RSD), and accuracy have been studied. The results of the research showed the gas-liquid separator modified can be used instead of commercial gas- liquid separators. It was showed by the repeatability value as % RSD < 2/3 CV Horwitz values, the LOD was 0.2530 μg/mL, and the LOQ was 0.8432 μg/mL. The accuracy of this method was good shown by a recovery percentage of 101.6%. Based on the result of this research, the modified of gas-liquid separator can be used for the determination of Hg ions by using the CV-AAS method with valid results

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Section: Optimization Of Acid Type Usedmentioning

confidence: 99%

“…It is highly toxic even in low concentrations, and its dispersion in the environment is due to natural emissions or anthropogenic activities. Thus, the need for the development and validation of analytical methodologies for the determination and control of this toxic metal in samples is evident (Panggabean et al, 2018;Oreste et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Gas-Liquid Separator Modified on CV-AAS System for Determination of Total Hg in the Industrial Wastewater Samples

Sujito¹,

Pasaribu

Wirawan

et al. 2022

molekul

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“…Metode analisis dapat digunakan sebagai analisis rutin, dengan hasil yang dapat dipertanggungjawabkan dengan baik, tingkat ketelitian dan ketepatan yang tinggi serta perlu dilakukan suatu tahapan validasi metode (Panggabean et al, 2018;Taufiq et al, 2016). Validasi metode dilakukan sebagai suatu proses penilaian pada metode analisis tertentu berdasarkan percobaan laboratorium guna membuktikan bahwa metode tersebut telah memenuhi persyaratan untuk diaplikasikan (Harmita, 2004 Bahan-bahan yang digunakan dalam penelitian ini adalah karbon disulfida (CS 2 ), gas pembawa helium, larutan standar benzena, toluena dan xilena (E'Merck) dengan kualitas pro analysis (p.a.…”

Section: Pendahuluanunclassified

Validasi Metode Penentuan Benzena, Toluena dan Xilena pada Sampel Udara dan Tanah Menggunakan Kromatografi Gas

2019

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Penelitian tentang validasi metode penentuan kadar benzena, toluena dan xilena pada sampel udara dan tanah dengan menggunakan kromatografi gas telah dilakukan. Untuk mendapatkan hasil pengukuran yang valid, beberapa parameter penting yang berpengaruh dalam validasi metode telah ditentukan. Beberapa parameter penting yang dilakukan adalah penentuan besaran dasar kromatografi yang meliputi: waktu retensi, kapasitas (k’), faktor selektivitas (α) dan kinerja analitik yang meliputi: penentuan linearitas (r), limit deteksi (LOD), limit kuantitasi (LOQ), presisi dan akurasi. Hasil penelitian penentuan kinerja analitik sangat baik ditunjukkan oleh nilai presisi sebagai % KV < 2/3 nilai KV Horwitz, LOD untuk masing-masing senyawa benzena, toluena dan xilena adalah 0,02 mg/L; 0,59 mg/L dan 0,08 mg/L serta LOQ untuk masing-masing senyawa benzena, toluena dan xilena adalah 0,07 mg/L; 1,99 mg/L dan 0,27 mg/L. Akurasi metode ini sangat baik ditunjukkan dengan nilai presentase perolehan kembali masing-masing senyawa benzena, toluena dan xilena untuk sampel tanah sebesar 102,61 ± 4,61%; 101,65 ± 7,41%; 102,15 ± 4,15%, dan untuk sampel udara masing-masing senyawa sebesar 101,69 ± 5,77%; 102,08 ± 5,43% dan 98,55 ± 5,11%. Berdasarkan hasil penelitian ini, metode kromatografi gas dapat digunakan dalam penentuan benzena, toluena dan xilena pada sampel udara dan tanah dengan memberikan hasil yang valid.Validation Method on The Determination of Benzene, Toluene and Xylene in Air and Soil Samples Using Gas Chromatography. The present study investigated the method for the determination of the content of benzene, toluene, and xylene in air and soil samples using gas chromatography. To obtain a valid measurement result, several important parameters that influence the method validation have been determined. The several important parameters carried out are the determination of the basic chromatographic such as retention time, capacity factor (k'), selectivity (α) and analytical performance measurement includes: the determination of linearity (r), limit of detection (LOD), limit of quantitation (LOQ), precision and accuracy. The result of analytical performance of the research are well verified, in which the value of precision was % CV < 2/3 CV Horwitz value, LOD for benzene, toluene, and xylene compound were 0.02 mg/L, 0.59 mg/L, 0.08 mg/L, respectively, and LOQ for benzene, toluene and xylene compounds was 0.07 mg/L, 1.99 mg/L and 0.27 mg/L respectively. This method achieved high accuration, indicated by a percentage of recovery value of benzene, toluene, and xylene for soil samples of 102.61 ± 4.61%; 101.65 ± 7.41%; 102.15 ± 4.15%, and for air samples was 101.69 ± 5.77%, 102.08 ± 5.43%, and 98.55 ± 5.11% respectively. Based on the results of this research, the method presented in this study can be applied for the determination of benzene, toluene, and xylene using gas chromatography in air and soil samples with valid results.

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“…Berdasarkan Tabel 1.diperoleh nilai LOD sebesar 0,2530 ppbdan LOQ sebesar 0,8432 ppb. Data ini menunjukkan konsentrasi analit terendah dan kuantitas terkecil yang dapat ditetapkan oleh suatu metode dengan diaplikasikan secara lengkap pada metode yang digunakan dengan kondisi yang disepakati di laboratorium uji [6,17]. Nilai ini menunjukkan bahwa jumlah analit masih dapat terukur oleh VGA-AAS, sehingga untuk analisis Hg dengan menggunakan instrumen VGA-AAS masih mampu terbaca serapannya.…”

Section: Lod Dan Loqunclassified

“…Teknik CV-AAS merupakan teknik yang paling banyak digunakan dalam penentuan kadar Hg karena memiliki ketepatan, kepekaan dan tingkat ketelitian yang tinggi [5], serta mampu menganalisis sampel yang memiliki konsentrasi rendah. Teknik ini memungkinkan pemisahan analit tanpa adanya gangguan dari matriks sampel [6].Pada teknik CV-AAS, ion Hg dalam sampel dianalisis melalui proses hidrida dengan menggunakan reduktor yang sangat kuat seperti SnCl2 dalam suasana asamyang dapat mereduksi sekitar 95%, sehingga Hg dalam sampel diubah menjadi Hg netral (Hg 0 ) berbentuk gas yang selanjutnya akan tereksitasi karena menyerap sinar yang berasal dari lampu katoda Hg dalam AAS [7] dan dapat ditentukan kadarnya.…”

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VALIDATION OF THE METHODS OF Hg DETERMINATION ON WASTE WATER TREATMENT PLANT SAMPLES USING COLD VAPOUR-ATOMIC ABSORPTION SPECTROPHOTOMETER (CV-AAS)TECHNIQUES

2018

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The research about validation of the method of Hg determination on the sample from wastewater treatment plant (WWTP) PT. Badak NGL Bontang, Kalimantan Timur using cold vapour-atomic absorption spectrophotometer (CV-AAS) techniques has been conducted. To obtain a valid measurement result, determinations of the important several parameters that influence the method validation are used. The results of research showed that 20% SnCl2 solution could be used as a reducing agent. The analytic performance of measurement obtain is good, showed with the linearity (r) value ≥ 0.995, LOD was 0.2530 ppb, LOQ was 0.8432 ppb, MDL was 0.6427 ppb and repeatability and reproducibility are shown as % RSD < 2/3 CV Horwitz values. The accuracy of this method is very good with a percentage of recovery value of 114.88%. Based on the results of this research, CV-AAS method can be used in the determination of Hg in WWTP samples with the valid results.

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The Utilization of Nitrogen Gas as a Carrier Gas in the Determination of Hg Ions Using Cold Vapor-Atomic Absorption Spectrophotometer (CV-AAS)

Abstract: The research about utilization of nitrogen gas as a carrier gas in the determination of Hg ions by using Cold Vapor-Atomic Absorption Spectrophotometer (CV-AAS

Cited by 8 publications

References 18 publications

Gas-Liquid Separator Modified on CV-AAS System for Determination of Total Hg in the Industrial Wastewater Samples

Gas-Liquid Separator Modified on CV-AAS System for Determination of Total Hg in the Industrial Wastewater Samples

Validasi Metode Penentuan Benzena, Toluena dan Xilena pada Sampel Udara dan Tanah Menggunakan Kromatografi Gas

VALIDATION OF THE METHODS OF Hg DETERMINATION ON WASTE WATER TREATMENT PLANT SAMPLES USING COLD VAPOUR-ATOMIC ABSORPTION SPECTROPHOTOMETER (CV-AAS)TECHNIQUES

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