Analytical pervaporation: a new separation technique

Castro, M.D. Luque de; Papaefstathiou, I.

doi:10.1016/s0165-9936(97)00102-7

Cited by 45 publications

(10 citation statements)

References 16 publications

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“…Yang mulai diperkenalkan pada tahun tujuh puluhan dan telah diaplikasikan untuk analisis beranekaragam sampel, baik itu sampel pertanian, obat-obatan, maupun sampel lingkungan. Sistem FIA ini sangat fleksibel karena dapat secara mudah digabungkan dengan bermacam-macam teknik-teknik pemisahan, seperti sell difusi gas [1][2][3] dan pervaporator [4], dan berbagai macam detektor, seperti spektrofotometer dan detektor elektrokimia.…”

Section: Pendahuluanunclassified

Metode Pervaporator-Flow Injection (PV-FI) untuk Penentuan Nitrogen dalam Sampel Pupuk Secara In-Line

Sulistyarti

Sugiarto

Sakti

et al. 2012

JKV

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AbstrakDalam melakukan analisis bahan padat hampir selalu diperlukan penanganan sampel awal yang seringkali melibatkan proses destruksi, destilasi atau ekstraksi yang banyak menyita waktu, tenaga, dan bahan kimia. Oleh karena itu terwujudnya metode analisis yang memungkinkan analisis bahan padat secara inline sangatlah dinantikan untuk efisiensi ketiga hal tersebut. Pada penelitian ini, metode Pervaporator-Flow Injection (PV-FI) dioptimasi untuk penentuan nitrogen dalam sampel padat pupuk. Parameter yang diamati meliputi variabel kimiawi dan operasional, yaitu lama perendaman sampel dalam NaOH, konsentrasi NaOH, dan lama pemanasan. Hasil penelitian menunjukkan bahwa pemanasan sangat berpengaruh terhadap perolehan kembali nitrogen dari 60,54 % hingga 87,31 %. Kondisi optimum yang telah dicapai adalah lama perendaman 5 menit dan konsentrasi NaOH 10 % dengan ketepatan 87,31±0,98 % dan ketelitian 98,88 % serta limit deteksi sebesar 0,228 µg.Kata kunci: Sampel padat, nitrogen, pervaporator, on-line, flow injection. AbstractThe pervaporator-flow injection (PV-FI) method has been optimized for the determination of nitrogen in solid sample of fertilizer in order to solve the sample pretreatment problems related to solid sample analysis. The sample pretreatment usually involve destruction and distillation process which is laborious and consumes lots of time and chemicals. The method was optimized to the chemical and operational conditions involving length time of digestion in NaOH, concentration of NaOH, and length time of heating. The results showed that nitrogen recovery increased by heating from 60.54 % to 87.31% and under the obtained optimum conditions, the method gave result to the accuracy of 87.31 ± 0.98 %, precision of 98.88 % and detection limit of 0.228 µg.

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Section: Pendahuluanunclassified

Metode Pervaporator-Flow Injection (PV-FI) untuk Penentuan Nitrogen dalam Sampel Pupuk Secara In-Line

Sulistyarti

Sugiarto

Sakti

et al. 2012

JKV

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“…Membranes can be utilised in sample preparation in several ways [75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115]. Very generally, a membrane can be classified as a selective barrier between two phases [75,76,77].…”

Section: Membrane-based Sample Pretreatmentmentioning

confidence: 99%

“…This technique, which is intended for interfacing to gas chromatography, has been reviewed [113]. Analytical pervaporation was introduced recently for the analysis of volatile compounds in solid samples [114].…”

Section: Supported Liquid Membrane and Microporous Membrane Liquid-limentioning

confidence: 99%

Approaches for on-line coupling of extraction and chromatography

Hyötyläinen

Riekkola

2004

Analytical and Bioanalytical Chemistry

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This review provides an overview of the approaches available in order to perform on-line coupling of various extraction techniques with liquid and gas chromatography, for the analysis of semivolatile and nonvolatile analytes in liquid and solid samples. The main focus is on the instrumental set-up of these techniques. Selected real applications are described by way of illustration. The extraction methods suitable for on-line coupling covered in this review are: liquid-liquid extraction, solid-phase extraction, membrane-based techniques, pressurised liquid extraction, supercritical fluid extraction, and microwave- and sonication-assisted extractions. The following systems are not covered in this review: on-line coupled solid-phase extraction-liquid chromatography, purge-and-trap-GC, and membrane extraction with a sorbent interface-GC.

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“…A number of articles referring to application of analytical pervaporation in the environmental field has been reported; a critical discussion has been presented in a review [11]. Analytical pervaporation can be used for the determination of a single analyte or a number of analytes, being of inorganic, organic or organometallic nature.…”

Section: Environmental Analysismentioning

confidence: 99%