Spectrophotometric method for determination parts per million levels of cyclohexylamine in water

Quantification of corrosion inhibitors used in the water industry for steam condensate treatment: the indirect electroanalytical sensing of morpholine and cyclohexylamine

“…If the steam comes in contact with milk and milk products, the two amines are totally excluded from steam. 11 Cyclohexylamine and morpholine can be analysed by an array of analytical techniques such as high-pressure liquid chromatography, 12 ion chromatography, 13 or spectrophotometry 14 with detection limits in the required low partper million (ppm) range. Electroanalytical techniques are sensitive portable and cost-effective especially through the use of screen-printed electrochemical sensors which have scales of economy.…”

Determination of diethanolamine in cosmetics based on micellar extraction in situ derivatization coupled with high performance liquid chromatography

“…Some techniques, such as gas chromatography (GC), [6][7][8][9][10] high performance liquid chromatography (HPLC), [11][12][13][14] titration, 15 ion chromatography (IC), 16,17 capillary electrophoresis (CE), 18 eld asymmetric ion mobility spectrometry (FAIMS) 19 and spectrophotometry, have already been reported for the determination of DEA or alcamines. 20 Of these methods, titration is the stated standard method used in the chemical industry standard of China for determination of DEA in industrial use (HG/T 2916-1997). 13 However, this method is time-consuming, labor-intensive and involves complicated procedures.…”

Derivatization Ion Chromatography for the Determination of Monoethanolamine in Presence of Hydrazine in PHWR Steam-Water Circuits

“…Along with amine, hydrazine is injected to scavenge dissolved oxygen, and thereby produce reducing conditions. The treatment is called as an all volatile treatment (AVT), and the amines are used as AVT reagents [1–3]. Ammonia (earlier used) was replaced by cyclohexylamine and morpholine as AVT reagents because of their less volatility [3, 4].…”

“…The treatment is called as an all volatile treatment (AVT), and the amines are used as AVT reagents [1–3]. Ammonia (earlier used) was replaced by cyclohexylamine and morpholine as AVT reagents because of their less volatility [3, 4]. This change allowed the pH of the steam condensate from the turbine cycle to be increased to a level that significantly reduced flow-assisted corrosion.…”