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We have developed a robust method for the detection of heavy metal ions zinc, cadmium, and mercury in water. In this study we have synthesized a hydrogel based on biopolymer that is raw wool obtained from eszvMarino sheep and used this hydrogel as heavy metal ion sensor in the water. We have incorporated meta- benziporphodimethene ligand in-situ in the hydrogel synthesis, which shows selectively color-changing characteristics when immersed in Zn2+, Cd2+ and Hg2+ metal ions aqueous solution. This hydrogel shows selective response towards Zn2+, Cd2+ and Hg2+ metal ions in a competitive environment. Meta-BPDM was responsible for the selectivity of hydrogel towards Zn2+, Cd2+ and Hg2+ metal ions in water. This selective sensing behavior of raw wool based hydrogel has given a novel existence to our study. The synthesized hydrogel was studied for sensing applications and characterized by using FTIR, TGA, and SEM techniques.

Purpose – The purpose of this study is to find the organizational practices in place for the performance evaluation of temporary employees and how that varies from permanent employees. Method – The study takes an inductive and interpretive approach to find out the unknown practices. The study is conducted over 7 respondents from different organizations split between recruitment agencies and client organizations and represents practices maintained by both set of industries. Findings – The study identifies low standardization in performance evaluation and discusses the variance from literature over the subject matter. Also a model is drawn based on the amalgamation of literary review and empirical results. Implications – The study presents variance in the processes for temporary employees and the prime areas where the variance occurs. For the organizations to have fair and just performance management system and for equality towards temporary employees, these issues must be addressed. Limitations – Cultural practices are not taken into consideration and literature might be based on different cultural practices than the respondents country and for a wholesome study, more respondents might be needed.