Spectrophotometric and fluorometric methods for the determination of hydrazine and its methylated analogues

Smolenkov, A. D.; Родин, И. А.; Шпигун, О. А.

doi:10.1134/s1061934812020116

Cited by 57 publications

(15 citation statements)

References 68 publications

(64 reference statements)

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“…Moreover, the faradaic efficiencies of hydrazine electrooxidation (0.1 m KOH, 20 × 10 −3 m hydrazine) at 0.5 V and 1.0 V versus RHE are 99.2% and 99.8%, respectively, indicating a high level of electron utilization (Figure S11, Supporting Information). In addition, the residual hydrazine content in electrolyte after the electrooxidation test was measured by UV–vis absorption spectrum (Figure S12a,b, Supporting Information), which is in accordance with the theoretical results (Table S3, Supporting Information). This demonstrates that the hydrazine oxidation is the dominant reaction during the electrocatalytic process.…”

supporting

confidence: 85%

Hierarchical CoNi‐Sulfide Nanosheet Arrays Derived from Layered Double Hydroxides toward Efficient Hydrazine Electrooxidation

et al. 2016

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supporting

confidence: 85%

Hierarchical CoNi‐Sulfide Nanosheet Arrays Derived from Layered Double Hydroxides toward Efficient Hydrazine Electrooxidation

et al. 2016

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“…Senyawa hidrazina dapat dideteksi menggunakan beberapa metode analitik seperti spektrofotometri (Kosyakov et al 2017), kolorimetri (Park et al 2019) dan fluorometri (Smolenkov, Rodin, and Shpigun 2012), metode teknik kromatografi seperti kromatografi gas dan cair (Smolenkov 2012), kromatografi gas-spektrometri massa (McAdam et al 2015), dan metode elektroanalitik seperti voltametri (Raoof, Ojani, and Mohammadpour 2010) dan amperometri (Srinidhi et al 2020), serta metode lainnya.…”

Section: Pendahuluanunclassified

Determinasi Amperometrik Senyawa Hidrazina Menggunakan Elektroda Cus/Rgo-Cp Termodifikasi

Kharismadewi¹,

Martini²

2021

PPTK

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Tembaga sulfida (CuS) merupakan material semikonduktor tipe-p yang dapat digunakan pada aplikasi sensor elektrokimia. CuS dimodifikasi dengan material Graphene oksida tereduksi (rGO) pada permukaan elektroda carbon paper (CP) untuk meningkatkan mobilitas elektron dan konduktivitas elektronik CuS yang rendah. Material CuS/rGO-CP ini kemudian digunakan sebagai material sensor senyawa Hidrazina yang terdapat pada air limbah. CuS-rGO disintesa melalui reaksi solvotermal pada temperatur 200oC, dimana dihasilkan bentuk CuS nanosphere dengan ukuran 220 nm yang terdekorasi pada permukaan rGO. Hasil uji cyclic voltammetry dan amperometri menunjukkan bahwa elektroda CuS/rGO-CP memiliki respon elektronik dan stabilitas material yang lebih baik dibandingkan elektroda CuS-CP. Selain itu, CuS/rGO-CP juga memiliki kestabilan yang baik terhadap interferensi seperti K+, SO42-, PO43-, Na+ dan Cl-, dengan standar deviasi sebesar 5,5% (n=3). Selanjutnya, dari hasil uji reproducibility, elektroda CuS/rGO-CP menunjukkan hasil yang baik yaitu sebesar 1,8% (n=3) pada standar deviasi relatif. Dari hasil analisa yang dilakukan disimpulkan bahwa material elektroda CuS/rGO-CP memiliki potensi yang baik sebagai material sensor senyawa Hidrazina, selain merupakan elektroda yang ramah terhadap lingkungan.

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“…The catalyst Pt comes from Energy Chemistry. U(IV) concentration is measured by dichromate titration, total concentration by titanous dichromate titration [18][19][20][21], hydrazine by spectrophotometer [21,22] and nitric acid by ammonium ox amide compleximetry.…”

Section: Preparation and Characterization Of Catalystsmentioning

confidence: 99%

Research of thermodynamic and kinetics in preparing U(IV) by reducing and catalyzing U(VI) with hydrazine

Xia

et al. 2015

Radiochimica Acta

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The effect of concentration of U(VI), hydrazine, nitric acid and the amount of catalyst, and the thermodynamics and kinetics of the reaction in preparing U(IV) by catalyzing and reducing U(VI) are studied in catalytic reduction of U(VI) with hydrazine as reductant and Pt as catalyst. The comparison of calculated theoretical reaction heat value and practical value is also given. The result shows that with the increase of density of U(VI) and hydrazine, increase of amount of catalyst and decrease of nitric acid, reaction rate slows down. The reaction kinetic rate equation is as follow: −d (UO 2 2+ )/d = 1.11 (UO 2 2+ ) 1.42 (N 2 H 5 + ) −0.72 (H + ), and the reaction rate constant is 1.3 × 10 −3 (mol/L) −0.81 /min when S/L is 0.008 kg/L at 50 ∘ C. The theoretical reaction equation of unit volume is as follows: = Δ f m,1 + Δ f m,2 [ (N 2 H 4 ) − (UO 2 2+ ) /2 − ]/3. The comparison shows the coincidence in 1 h of theoretical value and practical value.

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Spectrophotometric and fluorometric methods for the determination of hydrazine and its methylated analogues

Cited by 57 publications

References 68 publications

Hierarchical CoNi‐Sulfide Nanosheet Arrays Derived from Layered Double Hydroxides toward Efficient Hydrazine Electrooxidation

Hierarchical CoNi‐Sulfide Nanosheet Arrays Derived from Layered Double Hydroxides toward Efficient Hydrazine Electrooxidation

Determinasi Amperometrik Senyawa Hidrazina Menggunakan Elektroda Cus/Rgo-Cp Termodifikasi

Research of thermodynamic and kinetics in preparing U(IV) by reducing and catalyzing U(VI) with hydrazine

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