The Application Of ICP-AES In The Determination Of Boron, Tin Copper And Iron In Adhesives And Other Chemical Products

Adhesives have been developed rapidly in recent years owning to their wide use in a wide rangeof industries. For practical purposes, the presence of impurities during the process of the productionand storage of adhesives and the pollution of the containers, piping and reactor equipment, resultis inthe presence of trace metal elements. In this paper, the methods for determination of trace inorganicelements, such as boron, tin, copper, and iron in the samples were reviewed. In this thesis, a series ofreliable methods based on inductively coupled plasma atomic emission spectroscopy have beendeveloped for determination of boron, tin, copper and iron.The contents of this thesis are as follows:Part one: In this paper, the current methods for determination of trace inorganic elements suchas boron, tin, copper, and iron in the sample were reviewed. The principle, interference, the ways toeliminate interference and the application of nductively coupled plasma atomic emissionspectrometry were also introduced in this part.Part two：In this thesis, the instant adhesive samples were prepared by Oxygen flask combustionmethod，and then detected by ICP-AES in order to determinate the content of chromium and boron.The instrument’s optimal working conditions were studied. Working Parameters including RFpower and nebulizer flow pressure were optimized. The methods were verified via the analysis ofrecovery test and the comparative experiments. In comparison with other methods, this methodshows many attractive features including ease of use, low cost, high reliability and rapidly. Thisdetermination method is accurate and reliable, the detection limit of chromium is0.0186mg/L withrecoveries ranging from60%to65%. In addition, the limit of boron is0.034mg/L。Part three： An new method for the determation of Tin in adhesives with ICP-AES is describedin this paper. The samples were digested by nitric acid and hydrochloric acid and then detected byICP-AES The wet processing’s optimal temperature and instrument’s optimal working conditionsare researched. Working Parameters including RF power and nebulizer flow pressure were optimized.The methods were verified via the analysis of recovery test and the comparative experiments. Incomparison with traditional methods, this method is more simple and rapidly. This determination method is accurate and reliable, the detection limit of tin is0.66mg/L, and the recoveries range from96.01%to108.47%.Part four：In this paper, dry ashing pretreatment method was used for the determination ofcopper and iron in the adhesive samples. The samples were burned in the muffle furnace during500~600℃for30minutes. The treated samples were then detected by ICP-AES in order todeterminate the content of copper and iron. The instrument’s optimal working conditions are studied.Working Parameters including RF power and nebulizer flow pressure were optimized. Thisdetermination method is accurate and reliable, with the detection limit of copper and iron were0.0036mg/L and0.0157mg/L respectively, the recoveries were about97.8%~101.8%and96.3%~98.2%, respectively.