Abstract
Ammonia (NH3) has been widely used in the manufacture of fertilizers that applied to soil, but the high consumption of fertilizers will end up with water pollution. Owing to the deleterious effects of NH3 to human and environment, a new optosensor for NH3 has been fabricated based on silica pellet sensing material. Microsilica was synthesized by sol-gel method in the presence of cobalt(II) chloride hexahydrate (CoCl2·6H2O), followed by manual grinding process to obtain micro-sized silica particles. Due to the non-transparent pellet material used for NH3 sensing, a fiber optic reflectance spectrophotometer was employed for monitoring of reflectance signal transduction event as the pellet colour changed from pink to blue hue upon reaction with NH3 at optimum pH 13. Due to the high porosity and surface area of silica microparticles were used as immobilization matrix, the immobilized Co2+ ion demonstrated broad dynamic linear range from 18 to 100 ppm NH3 with a fast response time of 3 min. The reflectometric sensing protocol involves a single-step NH3 assay which merely requires dispensing small aliquots of NH3 onto the reaction surface of the pellet sensor. This makes on-site NH3 detection more user-friendly and convenient when compared to traditional electrochemical-, infrared- and gas chromatography-based methods.
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Appl M (1999) Ammonia: principles and industrial practice. Wiley, New York
Hasan HA, Abdullah SRS, Kamarudin SK, Kofli NT (2011) Problems of ammonia and manganese in Malaysian drinking water treatments. World Appl Sci 12(10):1890–1896
Shaposhnik A, Ryabtsev S, Zviagin A, Korchagina S, Meshkova N, Shaposhnik D, Vasiliev A (2011) Selective detection of ammonia and its derivatives using MOX-sensor and microreactor. Procedia Eng 25:1097–1100
World Health Organization (2011) Guidelines for drinking-water quality, 4th edn. World Health Organization, Geneva
Ni JQ, Heber AJ (2001) Sampling and measurement of ammonia concentration at animal facilities-A review. American society of agricultural engineers annual international meeting paper no. 01-4090
Aomura Y, Kobayashi Y, Miyazawa Y, Shimizu H (2010) Application of copper sulfate pentahydrate as an ammonia removal reagent for the determination of trace impurities in ammonia gas chromatography. J Chromatogr A 1217:1838–1844
Nakano N, Sugata K, Nagashima K (1995) Development of a monitoring tape for ammonia gas in air by fluorescence detection. Anal Chim Acta 302(23):201–205
Masserini RT, Fanning KA (2000) A sensor package for the simultaneous determination of nanomolar concentration of nitrite, nitrate, ammonia in seawater by fluorescence detector. Mar Chem 68(4):323–333
Rastegarzadeh S, Razei V (2007) An optical sensor for zinc determination based on zincon as sensing reagent. Sens Actuators B 129(1):327–331
Staden JF, Taljaard RE (1997) Determination of ammonia in water and industrial effluent streams with the indophenol blue method using sequential injection analysis. Anal Chim Acta 344:281–289
Pranaitytė B, Jermak S, Naujalis E, Padarauskas A (2007) Capillary electrophoretic determination of ammonia using headspace single-drop microextraction. Microchem J 86:48–52
Varghese BP, Pillai AB, Naduvil MK (2013) Fiber optic sensor for the detection of ammonia, phosphate and iron in water. J Optics 42(2):78–82
Tan LL, Ahmad M, Lee YH (2012) A novel optical ammonia sensor based on reflectance measurements for highly polluted and coloured water. Sens Actuators B: Chem 171–173:994–1000
Azrina A, Khoo HE, Idris MA, Amin I, Razman MR (2011) Major inorganic elements in tap water samples in Penisular Malaysia. Malays J Nutr 17(2):271–276
Acknowledgment
We gratefully acknowledge Universiti Kebangsaan Malaysia for the Young Researchers Encouragement Grant (GGPM-2014-035) and Malaysian Ministry of Higher Education for Fundamental Research Grant Scheme (FRGS/2/2014/SG01/UKM/02/1) and Exploratory Research Grant Scheme ( ERGS-RDU120604).
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Mohamed Noor, N.S., Tan, L.L., Zainuddin, S.N., Chong, K.F., Heng, L.Y., Tajuddin, S.N. (2015). Reflectometric Optosensor for Visual Detection of Ammonia Based on Silica Pellet Sensing Material. In: Hashim, M. (eds) ICGSCE 2014. Springer, Singapore. https://doi.org/10.1007/978-981-287-505-1_33
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DOI: https://doi.org/10.1007/978-981-287-505-1_33
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