Protection of Human in the Working Environment
نویسندگان
چکیده
The main purposes of this study were to select a photochromic dye and to develop an active welding filter with a photochromic layer. A series of functionalized spirobenzopyranoindolins were synthesized and their photophysical and photochemical properties were investigated in a solution using absorption and emission spectroscopy. Time-resolved fluorescence spectroscopy measurements were used to characterize the decays and rate constants of fluorescence emission. One dye was selected as a suitable photoactive compound in automatic welding filters. A model of an active welding filter with a photochromic layer based on 1’,3’,3’-trimethyl-6-nitrospiro[2H-1-benzopyran-2,2’indole] (6-nitroBIPS) was developed. The paper presents the results of tests of the filter conducted according to EN standards.
منابع مشابه
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The wise God, has created the environment based on the set goals logic and purposes. God has ercated eveything quantitatively and qualitatively in a proper manar. God has declared in the Quran: "Verily, all things have we created by measure" and/or in another verse he says: "And the earth, we have spread it out, creating firm standing mountains, and grown in it every thing in balance". This s...
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