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The Assif El Mal Zn Pb Cu Ag vein system located in the northern flank of the High Atlas of Marrakech Morocco is hosted in a Cambro Ordovician volcaniclastic and metasedimentary sequence composed of graywacke siltstone pelite and shale interlayered with minor tuff and mudstone Intrusion of synorogenic to postorogenic Late Hercynian


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 · The content of metals Ni Cd Pb Cu Zn and Ti in microplastics after ultrasonic cleaning has been analyzed by ICP MS Based on data from the long term sorption of metals by microplastics and a comparison of metal burden between microplastics macroplastics and fresh plastic products we suggested that the majority of heavy metals carried by

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Transcript 1 PROCEEDINGS OF PAKISTAN CONGRESS OF ZOOLOGY Volume 31 2011 All the papers in this Proceedings were refereed by experts in respective disciplines THIRTY FIRST PAKISTAN CONGRESS OF ZOOLOGY held under auspices of THE ZOOLOGICAL SOCIETY OF PAKISTAN at UNIVERSITY OF AZAD AND JAMMU KASHMIR APRIL 19 21 2011 2 CONTENTS


Factors affecting the retention and sample selectivity were studied A shorter retention time and sharp peaks were obtained when ammonia was introduced into the mobile phase At an oven temperature of 100°C a flow rate of 60 ml rain 1 and use of a flame ionization detector the analysis of dialkyl sulphides showed that the copper resin

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Concentrations of Cu and Zn in wheat seedlings and grains collected from area B were significantly higher p 0 05 than in those collected from area A with the exception of Zn in wheat seedlings


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