hello, in addition to my previous message (the question), I have the following question in your edited sentence. In the sentence, don't you think "however" needs to be removed, becasue of "while" at the begining of the sentence? please clarify this as soon as you see my message. thanks.<br /><br /><br /><strong>While</strong> the applications for POMS, DMDO, and H<sub>2</sub>O<sub>2</sub>, may differ [e.g. POMS involves disinfection, bleaching, polymerization, and oxidizing sulfur compounds (SJCC, 2006)], <strong>however,</strong> most processes use hydrogen peroxide due to its high oxidation strength (Venkatadri and Peters, 1993).