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Nama Anggota Kelompok 2:
Agfharinda Azwa 1914121003
Widia Putri Rahayu 1914121004
Aldhi Apriand.S 1914121040
ABSTRACT
Sample preparation is an important step in chemical analysis, from time and reagent consuming point of view and from the probability of errors. The present article gives an overview of recently most used techniques in sample preparation for flame atomic absorption spectroscopy. Wet and dry sample decomposition techniques, separation and pre-concentration methods of the target analyte(s) have been discussed.
Agfharinda Azwa 1914121003
Widia Putri Rahayu 1914121004
Aldhi Apriand.S 1914121040
ABSTRACT
Sample preparation is an important step in chemical analysis, from time and reagent consuming point of view and from the probability of errors. The present article gives an overview of recently most used techniques in sample preparation for flame atomic absorption spectroscopy. Wet and dry sample decomposition techniques, separation and pre-concentration methods of the target analyte(s) have been discussed.
Kelompok 4:
Sabila Azzahra 1914121028
Karimah 1954121001
Abstract:
Ziziphus species have wide distribution and uses worldwide traditionally as medicine.
The flame atomic absorption spectroscopy was employed for the estimation of element contents
of different plant parts of Ziziphus species collected from different areas of Pakistan. The results
of the present study provide justification for the medicinal usage in the treatment of different
diseases. The metal contents in the samples were found at different levels which play a vital role
in cure of diseases. These results can give the importance about the herbal drugs prepared from
these plant materials in herbal remedies and in pharmaceutical companies.
Sabila Azzahra 1914121028
Karimah 1954121001
Abstract:
Ziziphus species have wide distribution and uses worldwide traditionally as medicine.
The flame atomic absorption spectroscopy was employed for the estimation of element contents
of different plant parts of Ziziphus species collected from different areas of Pakistan. The results
of the present study provide justification for the medicinal usage in the treatment of different
diseases. The metal contents in the samples were found at different levels which play a vital role
in cure of diseases. These results can give the importance about the herbal drugs prepared from
these plant materials in herbal remedies and in pharmaceutical companies.
Kelompok 3
Anggun Sari 1914121005
Ulivia Alfina Zahra 1914121011
Judul: A New Method for Decomposition and Comprehensive Analysis of Silicates by Atomic Absorption Spectrometry
Abstrak:
Rapid decomposition of silicates is achieved in a specially designed vessel made of Teflon (Du Pont) without volatilization losses by hydrofluoric acid at 110 °C. A fluoboric-boric acids system was found to provide a favorable decomposition medium and a suitable salt-free single matrix system. Conditions were developed for sufficient inhibition of the hydrolytic decomposition rate of fluoboric acid. This matrix was found to diminish significantly or to eliminate entirely the chemical, ionization, matrix, and instrumental interferences for atomic absorption measurements. The system permits contamination free sample handling in glass equipment, ensures sample solution stability, eliminates the need for closely matching the matrix constituents of the sample and standard solutions, contributes to signal stability, and to date provides an interference-free environment for the rapid and reliable atomic absorption spectrometric determinations of silicon, aluminum, titanium, and vanadium using a nitrous oxide-acetylene flame and for iron, calcium, magnesium, sodium, and potassium using an air-acetylene flame.
Anggun Sari 1914121005
Ulivia Alfina Zahra 1914121011
Judul: A New Method for Decomposition and Comprehensive Analysis of Silicates by Atomic Absorption Spectrometry
Abstrak:
Rapid decomposition of silicates is achieved in a specially designed vessel made of Teflon (Du Pont) without volatilization losses by hydrofluoric acid at 110 °C. A fluoboric-boric acids system was found to provide a favorable decomposition medium and a suitable salt-free single matrix system. Conditions were developed for sufficient inhibition of the hydrolytic decomposition rate of fluoboric acid. This matrix was found to diminish significantly or to eliminate entirely the chemical, ionization, matrix, and instrumental interferences for atomic absorption measurements. The system permits contamination free sample handling in glass equipment, ensures sample solution stability, eliminates the need for closely matching the matrix constituents of the sample and standard solutions, contributes to signal stability, and to date provides an interference-free environment for the rapid and reliable atomic absorption spectrometric determinations of silicon, aluminum, titanium, and vanadium using a nitrous oxide-acetylene flame and for iron, calcium, magnesium, sodium, and potassium using an air-acetylene flame.
DISKUSI ASS
Saya Widia Putri Rahayu 1914121004, izin bertanya kepada kelompok 4. Dalam presentasi dijelaskan bahwa penggunaan tumbuhan secara etno botani didukung oleh konsentrasi unsur bagian-bagian tumbuhan. Pertanyaannya penggunaan tumbuhan secara et botani ini yang seperti apa yaa? Dan jika tidak didukung oleh konsentrasi unsur bagian-bagian tunbuhan apa yang akan terjadi?
Saya Widia Putri Rahayu 1914121004, izin bertanya kepada kelompok 4. Dalam presentasi dijelaskan bahwa penggunaan tumbuhan secara etno botani didukung oleh konsentrasi unsur bagian-bagian tumbuhan. Pertanyaannya penggunaan tumbuhan secara et botani ini yang seperti apa yaa? Dan jika tidak didukung oleh konsentrasi unsur bagian-bagian tunbuhan apa yang akan terjadi?
Diskusi ASS
Saya Agfharinda Azwa, NPM 1914121003. Izin bertanya pada kelompok 4. Dalam presentasi tadi dijelaskan bahwa teknik seperti ASS, ICP-AES dan INAA secara rutin digunakan untuk menentukan elemen dalam tanaman obat. Jika salah satu teknik tersebut tidak digunakan maka apa yang terjadi? Terimakasih
Saya Agfharinda Azwa, NPM 1914121003. Izin bertanya pada kelompok 4. Dalam presentasi tadi dijelaskan bahwa teknik seperti ASS, ICP-AES dan INAA secara rutin digunakan untuk menentukan elemen dalam tanaman obat. Jika salah satu teknik tersebut tidak digunakan maka apa yang terjadi? Terimakasih
Diskusi AAS
Saya Anggun Sari, NPM 1914121005. Izin bertanya pada kelompok 1. Terkait dengan penggunaan AAS dalam jejak logam. Seberapa efektif AAS dalam mengidentifikasi jejak logam tersebut? dan mengapa pada percobaan AAS tersebut dapat dijadikan praktik forensik? Terima kasih
Saya Anggun Sari, NPM 1914121005. Izin bertanya pada kelompok 1. Terkait dengan penggunaan AAS dalam jejak logam. Seberapa efektif AAS dalam mengidentifikasi jejak logam tersebut? dan mengapa pada percobaan AAS tersebut dapat dijadikan praktik forensik? Terima kasih