State of the art in on‐line techniques coupled to flow injection analysis FIA/on‐line‐ a critical review

Puchades, Rosa; Maquieira, A.; Atienza, J.; Herrero, Miguel

doi:10.1155/s1463924690000219

Cited by 13 publications

(3 citation statements)

References 75 publications

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“…Namun, proses ekstraksi yang membutuhkan waktu lama dan jumlah pelarut yang banyak menyebabkan metode ini tidak efektif dan efisien dalam analisis. Proses ekstraksi dapat diganti dengan proses automasi yang lebih cepat, efektif dan efisien yang disebut dengan teknik prakonsentrasi analisis injeksi alir (flow injection analysis) [1][2][3][4][5][6][7][8] . Teknik injeksi alir merupakan metode analitik yang didasarkan pada penginjeksian sejumlah sampel dalam bentuk larutan ke dalam suatu aliran tidak bersegmen.…”

Section: Pendahuluanunclassified

Optimasi metode analisis injeksi alir pada analisis surfaktan anionik

Rusdi¹,

Amran²

2018

JC-T

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Surfaktan merupakan bahan aktif yang terdapat pada detergen, sabun, shampo dan lain-lain. Penggunaan surfaktan dalam jumlah besar berdampak pada tercemarnya lingkungan, seperti pencemaran air. Untuk itu perlu dilakukan penentuan kadar surfaktan dalam air yang tercemar. Penentuan kadar surfaktan umumnya dilakukan dengan spektrofotometri sinar tampak yang melibatkan proses ekstraksi. Namun metode ini membutuhkan waktu yang lama dan banyak menggunakan pelarut, sehingga perlu dikembangkan metode yang lebih efektif. Pada penelitian ini telah dikembangkan metode analisis surfaktan anionik berbasis analisis injeksi alir (flow injection analysis/ FIA) melalui teknik prakonsentrasi menggunakan minikolom C18 dengan deteksi spektrofotometri sinar tampak. Surfaktan anionik (Sodium Dodecyl Sulfate) akan membentuk pasangan ion dengan zat warna kationik (Brilliant Green) yang terkumpul pada minikolom C18. Pasangan ion ini kemudian dielusi dengan pelarut organik seperti metanol-kloroform (1:9). Spektrum sinar tampak dari pasangan ion BG-SDS memiliki serapan maksimum pada panjang gelombang 629 nm. Pasangan ion BG-SDS terbentuk dengan optimum pada pH 6. Analisis pendahuluan menunjukkan adanya hubungan yang linear antara perubahan konsentrasi SDS dengan nilai absorbansi pasangan ion. Semakin besar konsentrasi SDS maka nilai serapannya pun semakin besar. Konsentrasi BG optimum yang digunakan untuk membentuk pasangan ion sebesar 0,003 % m/v. Kata-kata kunci: surfaktan anionik, brilliant hijau, pasangan ion, prekonsentrasi, teknik injeksi alir.

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Section: Pendahuluanunclassified

Optimasi metode analisis injeksi alir pada analisis surfaktan anionik

Rusdi¹,

Amran²

2018

JC-T

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“…In addition to the papers detailing specific applications of FI and LC, there have been a number of authoritative reviews, for example on FI-ICP [80][81][82][83] and FI-atomic spectrometry [84][85][86]. A very comprehensive review of the literature is the second edition of Ruzicka and Hansen's book [87].…”

Section: Analysis By Icp-ms/96mentioning

confidence: 99%

On‐line analyte preconcentration with atomic spectrometric detection

Ebdon

Fisher

Hill

et al. 1991

Journal of Analytical Methods in Chemistry

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“…Since the early 1980s, research has been conducted into the development of online orthophosphate sensors [ 4 ]. Conventional laboratory methods based on classical colorimetric techniques are labor intensive and can only be used for the measurements of a limited number of discretely collected samples.…”

Section: Introductionmentioning

confidence: 99%

The Use of Bi-Potentiostat as a Simple and Accurate Electrochemical Approach for the Determination of Orthophosphate in Seawater

Altahan

Espósito

Bogner

et al. 2023

Sensors

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Autonomous on-site monitoring of orthophosphate (PO43−), an important nutrient for primary production in natural waters, is urgently needed. Here, we report on the development and validation of an on-site autonomous electrochemical analyzer for PO43− in seawater. The approach is based on the use of flow injection analysis in conjunction with a dual electrochemical cell (i.e., a bi-potentiostat detector (FIA-DECD) that uses two working electrodes sharing the same reference and counter electrode. The two working electrodes are used (molybdate/carbon paste electrode (CPE) and CPE) to correct for matrix effects. Optimization of squarewave voltammetry parameters (including step potential, amplitude, and frequency) was undertaken to enhance analytical sensitivity. Possible interferences from non-ionic surfactants and humic acid were investigated. The limit of quantification in artificial seawater (30 g/L NaCl, pH 0.8) was 0.014 µM for a linear concentration range of 0.02–3 µM. The system used a Python script for operation and data processing. The analyzer was tested for ship-board PO43- determination during a four-day research cruise in the North Sea. The analyzer successfully measured 34 samples and achieved a good correlation (Pearson’ R = 0.91) with discretely collected water samples analyzed using a laboratory-based colorimetric reference analyzer.

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State of the art in on‐line techniques coupled to flow injection analysis FIA/on‐line‐ a critical review

Cited by 13 publications

References 75 publications

Optimasi metode analisis injeksi alir pada analisis surfaktan anionik

Optimasi metode analisis injeksi alir pada analisis surfaktan anionik

On‐line analyte preconcentration with atomic spectrometric detection

The Use of Bi-Potentiostat as a Simple and Accurate Electrochemical Approach for the Determination of Orthophosphate in Seawater

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