Carboxylic acids, including fatty acids and benzoic acids, are often present in both municipal and industrial effluents. Describe a sample preparation combined with GC method for identification and determination of carboxylic acids in raw wastewater at ppb (ug L-1) level. Point out a suitable sample preparation technique and GC conditions in details and give justifications for your choice. ОН Heptanoic acid O. Benzoic acid ÇH3 ОН H3C CH3 4-Methylbenzoic acid 2,4-Dimethylbenzoic acid

Carboxylic acids, including fatty acids and benzoic acids, are often present in both municipal and industrial effluents. Describe a sample preparation combined with GC method for identification and determination of carboxylic acids in raw wastewater at ppb (ug L-1) level. Point out a suitable sample preparation technique and GC conditions in details and give justifications for your choice. ОН Heptanoic acid O. Benzoic acid ÇH3 ОН H3C CH3 4-Methylbenzoic acid 2,4-Dimethylbenzoic acid

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter7: Extraction

Section: Chapter Questions

Problem 1Q

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0.641 g of a semi-synthetic alkaloid was dissolved in 25 ml of 1% w/v acetic acid and wasanalysed directly by HPLC. The solution was found to contain 1.42 mg/100 ml of an impurity.What is the level of impurity in % w/w and ppm? Calculate the pH of a buffer system made by dissolving 1.2 g of acetic acid and 0.82 g ofsodium acetate in 500 ml of distilled water (pKa of acetic acid = 4.7)
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