Comparative studies involving different

Accuracy is a central theme in any analytical process and its pursuit can no longer be the work of a single analytical chemist but requires comparative studies involving many methodologies and many experts. It is sensible to expect that pooling different kinds of data (methods and users) will lead to better estimates of the truth, even if some of the contributions are more reliable than others. 

For hydrogenation of p-IBAP, supported Pd, Ni and Ru catalysts have been reported. However a comparative study of different types of catalysts has not been reported so far. Most of the earlier literature on this reaction is patented and there are only a few reports which deals with the catalytic aspects involved in the hydrogenation of p-IBAP (3-6). In this paper, experiments were performed to study the activity and selectivity of supported Ni and Ru... 

Misra, S., Gupta, R, Raghuwanshi, S., Dutt, K., and Saxena, R.K. (2011) Comparative study on different strategies involved for xylitol purification from culture media fermented by Candida tropi-calis. Separation and Purification Technology, 78 (3), 266-273. 

Detection limits for acetyl salicylic acid were 1 x 10 mol and for caffeine 8 X 10 mol A comparative study involving pyrolytic graphite with differ-... 

It may not be appropriate to compare the thermal stability characteristics of VC/VAc copolymer to that of a VC homopolymer (PVC). The copolymerization would involve different kinetics and mechanism as compared to homopolymerization resulting structurally in quite different polymers. Hence, copolymerization of VC with VAc cannot be regarded as a substitution of chlorines in PVC by acetate groups. To eliminate the possibility of these differences Naqvi [45] substituted chlorines in PVC by acetate groups, using crown ethers (18-crown-6) to solubilize potassium acetate in organic solvents, and studied the thermal stability of the modified PVC. Following is the mechanism of the substitution reaction ... 

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