ChemInform Abstract: Determination of the Constitution of Highly Chlorinated Organic Compounds via INADEQUATE13C NMR Spectroscopy.

1986 ◽  
Vol 17 (40) ◽  
Author(s):  
H. BAUER ◽  
J. BUDDRUS ◽  
W. AUF DER HEYDE ◽  
W. KIMPENHAUS
Keyword(s):  
Nmr Spectroscopy ◽  
Organic Compounds ◽  
Chlorinated Organic Compounds ◽  
Chlorinated Organic

Determination of low molecular weight chlorinated organic compounds in polyamideanine epichlorohydrin solution

2019 ◽  
Vol 34 (3) ◽  
pp. 326-333
Author(s):  
Qi Wei ◽  
Hao Cheng ◽  
Shubin Wu ◽  
Chunxia Chen
Keyword(s):  
Molecular Weight ◽  
Organic Compounds ◽  
Accurate Determination ◽  
Simultaneous Detection ◽  
Low Molecular Weight ◽  
Extraction Temperature ◽  
Chlorinated Organic Compounds ◽  
Relative Standard ◽  
Chlorinated Organic

Abstract A convenient and quick method has been developed for simultaneous detection of several low molecular weight chlorinated organic compounds (LMWC) in polyamideamine-epichlorohydrin (PAE) solution, using headspace-solid phase microextraction-gas chromatography (HS-SPME-GC). The method consists of extracting a sample containing 0.42 g/mL NaCl with an 85 µm polyacrylate (PA) coated fiber at an extraction temperature of {45^{\circ }}\text{C}, for an extraction time of 30 mins, and desorbing the analytes at {240^{\circ }}\text{C} for 6 mins. Under these optimized conditions, relatively low limits of detection (LOD) of the analytes, good linearity ({r^{2}}\ge 0.9934) and precision (relative standard deviation (\text{RSD}\le 4.38\hspace{0.1667em}\% )) were obtained. Taking into account the matrix effect, standard addition methodology was applied to validate this method and recovery values were between 91.59 % and 109.69 %. This method is therefore well-suited for accurate determination of low levels of LMWC in PAE.

Determination of Relative Configuration in Organic Compounds by NMR Spectroscopy and Computational Methods

ChemInform ◽  
2007 ◽  
Vol 38 (50) ◽  
Author(s):  
Giuseppe Bifulco ◽  
Paolo Dambruoso ◽  
Luigi Gomez-Paloma ◽  
Raffaele Riccio
Keyword(s):  
Nmr Spectroscopy ◽  
Organic Compounds ◽  
Computational Methods ◽  
Relative Configuration
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