Identifizierung von Stickstoffderivaten der Kohlensäure und Untersuchung ihrer Hydrolysate mittels Dünnschichtchromatographie

Knappe, E.; Rohdewald, I.

doi:10.1007/bf00502140

Cited by 18 publications

(2 citation statements)

References 6 publications

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“…The extracts were subjected to TLC on cellulose media without fluorescent indicator. The chromatograms were developed with 3 N ammonium hydroxide/methanol (60/75) (11). Visualization was carried out with silver nitrate spray followed by heating at 100 °C and with p-(dimethylamino)benzaldehyde (9).…”

Section: Experimental Methodsmentioning

confidence: 99%

Decomposition of nitroguanidine

Kaplan¹,

Cornell²,

Kaplan³

1982

Environ. Sci. Technol.

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Section: Experimental Methodsmentioning

confidence: 99%

Decomposition of nitroguanidine

Kaplan¹,

Cornell²,

Kaplan³

1982

Environ. Sci. Technol.

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“…There are only a few analytical methods such as high performance liquid chromatography, 1-3 gas chromatography-mass spectrometry, 4 Raman spectroscopy, 5 surfaceenhanced Raman microprobe spectroscopy after adsorption and displacement at the Ag/electrolyte interface, 6 and laser desorption ionization 7 for determination of melamine in samples. On the other hand, a simple method such as thin layer chromatography 8,9 is satisfactory for qualitative analysis, but is not entirely suitable for quantitative purposes. A gas chromatography method 10 requires a preliminary derivatization procedure, which is considered a disadvantage because of the longer time required for sample preparation and the concomi-tant source of analytical errors.…”

Section: Introductionmentioning

confidence: 99%

A New Turbidimetric Method for Determination of Melamine Based on its Reaction with Mercury(II)

Farajzadeh

Rahmani

2004

J Chinese Chemical Soc

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A turbidimetric technique based on a reaction between Hg(II) and melamine is described for the measurement of melamine content of wastewater of a petrochemical company. The present technique is rapid and simple, uses a small amount of reagent and is set up with low-cost equipment, making this system economically viable. The experimental conditions such as volume of reagent, pH of buffer, stirring time, stirring speed, ionic strength, etc. were optimized and used in plotting the calibration curve. The linear dynamic range was 1 -70 mg/L with a limit of detection of 0.3 mg/L. Repeatability of the proposed method is good, and the relative standard deviation (RSD%) is less than 1.5%. Interferences studies showed that the common compounds existing in wastewater have no negative effect on the efficiency of the method at relatively high concentrations.Finally, the proposed method has been successfully used in determination of melamine in wastewater of Urmia Petrochemical Company.

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