Comparison of NAA XRF and ICP-OES Methods on Analysis of Heavy Metals in Coals and Combustion Residues

Taftazani, Agus; Roto, Roto; Ananda, Novitasari Restu; Murniasih, Sri

doi:10.22146/ijc.17686

Cited by 6 publications

(6 citation statements)

References 15 publications

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“…Dalam penelitian ini, metode AAN dipilih karena memiliki sejumlah keunggulan dibandingkan metode analisis lainnya. Beberapa di antaranya, yaitu tidak memerlukan perlakuan awal (pre-treatment) dalam preparasi sampel, memiliki batas limit deteksi pengukuran hingga orde ppb, memiliki selektivitas tinggi, dan mampu melakukan analisis multi-elemen [13].…”

Section: Hasil Dan Pembahasanunclassified

Analisis Kandungan Unsur Logam pada Pakan Ternak dengan Metode Analisis Aktifasi Neutron (AAN) Reaktor Kartini

Taxwim,

Sri Murniasih,

Maria MWRY

2023

Prosiding Seminar Nasional Aplikasi Isotop Dan Radiasi 2021: Peran Isotop Dan Radiasi Untuk Indonesia Yang Berdaya Saing

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Telah dilakukan analisis kandungan logam pada pakan ternak berupa konsentrat untuk itik petelur (A), ayam pedaging (B), burung puyuh petelur(C), pelet ayam Bangkok (D), dedak (E). dan susu pengganti/replacer (F). Penelitian ini bertujuan untuk mengetahui kandungan dan konsentrasi logam (Ca, As, Hg, Cr, Fe, Zn, Co) dari pakan unggas (ayam, itik, puyuh) yang diberikan oleh kelompok peternak unggas setiap hari. Kandungan logam tersebut kemungkinan dapat terakumulasi pada ternak dan dapat membahayakan kesehatan masyarakat jika mengkonsumsinya. Kandungan logam yang melebihi nilai batas ambang akan berbahaya tehadap manusia jika dikonsumsi dan dapat menimbulkan pencemaran lingkungan. Metode penelitian ini menggunakan Analisis Aktivasi Neutron pada Reaktor Kartini dengan fluks neutron sebesar ± 1012 n cm-1 s-1, dari hasil penelitian diperoleh kandungan Ca terbesar pada sampel (A), yaitu 4,622±0,098 %, kandungan As terbesar pada sampel (D), yaitu 0,188±0,032 mg/kg, kandungan terbesar Hg pada sampel (A), yaitu 0,225±0,028 mg/kg, kandungan terbesar Cr pada sampel (E), yaitu 20,137±0,247 mg/kg, kandungan terbesar Fe pada sampel (A), yaitu 0,068±0,001mg/kg, kandungan terbesar Zn pada sampel (A), yaitu 1088,789±5,503 mg/kg, dan kandungan terbesar Co pada sampel (A), yaitu 1,713±0,043mg/kg dengan masing-masing unsur mempunyai pengaruh terhadap ternak dan manusia sehingga kelompok peternak dapat memilih pakan yang sesuai. Dari data analisis kandungan logam berat pada pakan ternak tersebut dapat disimpulkan masih dalam batas aman.

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Section: Hasil Dan Pembahasanunclassified

Analisis Kandungan Unsur Logam pada Pakan Ternak dengan Metode Analisis Aktifasi Neutron (AAN) Reaktor Kartini

Taxwim,

Sri Murniasih,

Maria MWRY

2023

Prosiding Seminar Nasional Aplikasi Isotop Dan Radiasi 2021: Peran Isotop Dan Radiasi Untuk Indonesia Yang Berdaya Saing

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“…INAA has been previously applied in environmental studies (soils, sediments, biological samples), nevertheless, it is not a commonly used technique especially for the vegetal samples, and therefore it is worth to further explore its potential and limitations for plant analysis. [13][14][15][16] X-ray fluorescence (XRF) is another nondestructive technique that has also been used for plant material analysis. [17][18][19][20][21] XRF spectrometry provides the possibility of performing direct multielement analysis of solid samples with a wide dynamic range and low cost per measurement.…”

Section: Introductionmentioning

confidence: 99%

Comparison of non-destructive techniques and conventionally used spectrometric techniques for determination of elements in plant samples (coniferous leaves)

Orlić

Anicic-Urosevic

Vergel

et al. 2022

JSCS

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Conventionally used spectrometric techniques (ICP-OES, ICP-MS) usually involve time-consuming sample preparation procedure of sample dissolution which requires the usage of aggressive and toxic chemicals. The need for suitable and sustainable analytical methods for direct multi-elemental analysis of plant samples has been increased in recent years. Spectrometric techniques for direct sample analysis (INAA, XRF) have been applied in environmental studies and various fields of screening tests. Nevertheless, these techniques are not commonly used for plant sample analysis and their performances need to be evaluated. This research aimed to assess how reliable non-destructive techniques are in the determination of elements in plants compared to conventionally used spectrometric techniques. A total of 49 plant samples of four conifer species (Pinus nigra, Abies alba, Taxus baccata, and Larix decidua) were measured using two conventionally used (ICP-MS, ICP-OES) and two non-destructive techniques (WD-XRF, INAA). The comparison was performed by investigation of relative ratios of concentrations and by correlation analysis. Moreover, precision of the techniques was examined and compared. The quality control included analysis of NIST pine needles certified reference material (1575a) using all examined techniques. Our results suggest that additional analytical and quality control steps are necessary for reaching the highest accuracy of multi-elemental analysis.

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“…Improvements in specific surface area [18,19], pore volume, homogenous formation of hetero-linkages and development of appropriate surface acid sites [16,17] was reported by using a sol-gel method whereas higher acidity in the sol-gel samples was attributed to higher density of hetero-linkages formed [18,19]. To overcome the problem of deteriorated textural properties caused by conventional drying methods (collapse of the formed gel structure and reduction of mesoporosity by the increasing fraction of micropores leading to decreased surface areas) [20,21], a supercritical drying method (SCD) can be applied to obtain aerogels [22][23][24]. SCD can be performed for solvent removal by solvent phase change to supercritical (SC) fluid, followed by solvent evacuation from the gel network by applying transition from supercritical fluid to gas.…”

Section: Introductionmentioning

confidence: 99%

“…SCD can be performed for solvent removal by solvent phase change to supercritical (SC) fluid, followed by solvent evacuation from the gel network by applying transition from supercritical fluid to gas. Aerogels produced by supercritical drying typically have high porosities (50-99 vol%), lower microporosity, higher surface areas and can yield highly porous amorphous mixed oxide aerogels [22][23][24]. Besides advantageous textural properties, the choice of active phase is equally important in order to design a highly active catalyst for "deep HDS".…”

Section: Introductionmentioning

confidence: 99%

“…Kinetic modelling of HDS reactions has been carried out by several researchers [36][37][38][39][40][41][42][43][44][45][46][47]. The Langmuir-Hinshelwood, also well known as the Hougen−Watson mechanism, has been reported to suitably describe the HDS reactions [20][21][22]. Hougen−Watson rate equations for hydrogenolysis and hydrogenation of dibenzothiophenes to bicyclohexyl through several steps, were developed by Froment and co-workers [36][37][38].…”

Section: Introductionmentioning

confidence: 99%

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Desulphurisation of dibenzothiophene and 4,6–dimethyl dibenzothiophene via enhanced hydrogenation reaction route using RePd–TiO2/SiO2 aerogel catalysts: kinetic parameters estimation and modelling

Prokić-Vidojević

Glišić

Pešić

et al. 2022

Hem Ind

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Re/Pd-TiO2/SiO2 aerogel catalysts were synthesized by using a sol-gel method and supercritical drying in excess solvent and investigated in the reaction of hydrodesulphurisation (HDS) of dibenzothiophene (DBT) and 4,6-dimethyl dibenzothiophene (4,6-DMDBT). Both Re/Pd catalysts, obtained with and without the use of mesitylene in the synthesis step, have shown increased conversions of up to 70 % in the desulphurization of 4,6-DMDBT, when compared to conventional Co/Mo hydroprocessing catalysts. This observation is of importance for conversion of highly refractory 4,6-DMDBT and hydroprocessing to produce ultra-low sulphur diesel fuels, ULSD. In order to quantify the extent of desulphurisation, which proceeds via a hydrogenation route, conversions of DBT and 4,6-DMDBT along with evolution of reaction products characteristic for the direct desulphurisation route and the hydrogenation route were monitored by using a gas chromatography?mass spectrometry (GC-MS) analytical technique. The reaction was performed at 630 K and 6 MPa in a batch catalytic reactor. The experimental results were used in the Hougen-Watson kinetic model describing DBT and 4,6-DMDBT desulphurisation on ? and ? active sites. Kinetic parameters of this complex catalytic kinetics were determined by using a Genetic Algorithm method and minimum deviation function. Values of calculated kinetic parameters and values of the ratio of 3-methylcyclohexyltoluene (MCHT and dimethyl biphenyl (DMBPH) expressed as the MCHT/(MCHT+DMBPH) ratio ranging between 0.66 and 0.94, have confirmed that the hydrogenation route is the dominant route for desulphurisation of 4,6-DMDBT.

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Comparison of NAA XRF and ICP-OES Methods on Analysis of Heavy Metals in Coals and Combustion Residues

Cited by 6 publications

References 15 publications

Analisis Kandungan Unsur Logam pada Pakan Ternak dengan Metode Analisis Aktifasi Neutron (AAN) Reaktor Kartini

Analisis Kandungan Unsur Logam pada Pakan Ternak dengan Metode Analisis Aktifasi Neutron (AAN) Reaktor Kartini

Comparison of non-destructive techniques and conventionally used spectrometric techniques for determination of elements in plant samples (coniferous leaves)

Desulphurisation of dibenzothiophene and 4,6–dimethyl dibenzothiophene via enhanced hydrogenation reaction route using RePd–TiO2/SiO2 aerogel catalysts: kinetic parameters estimation and modelling

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