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IMPROVING THE QUALITY OF ENVIRONMENTAL TRACE ANALYSIS
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FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
1984, 317 (3-4)
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CERTIFICATION OF TRACE-ELEMENT CONTENTS (AS, CD, CO, CU, FE, MN, HG, NA, PB AND ZN) IN A FLY-ASH OBTAINED FROM THE COMBUSTION OF PULVERIZED COAL
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FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
1983, 315 (01)
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CERTIFICATION OF THE CONTENTS OF CADMIUM, COPPER, MANGANESE, MERCURY, LEAD AND ZINC IN 2 PLANT MATERIALS OF AQUATIC ORIGIN AND IN OLIVE LEAVES
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FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
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KURFURST L, COMMUNICATION
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ASSESSMENT OF METHODS OF ASSIGNING CERTIFIED VALUES TO REFERENCE MATERIALS
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FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
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RAEYMAEKERS B, 1984, MIKROCHIM ACTA, V2, P437
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INSTRUMENTAL NEUTRON-ACTIVATION ANALYSIS AS A MEANS OF EVALUATION OF REFERENCE SAMPLE HOMOGENEITY
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JOURNAL OF RADIOANALYTICAL CHEMISTRY,
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CERTIFICATION OF THE CONTENTS OF AS, B, CD, CR, CO, CU, MN, HG, NI, TI, V AND ZN IN A NATURAL MOROCCAN PHOSPHATE ROCK
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FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
1983, 315 (08)
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PRETREATMENT STUDIES WITH BIOLOGICAL AND ENVIRONMENTAL MATERIALS .1. SYSTEMS FOR PRESSURIZED MULTISAMPLE DECOMPOSITION
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FRESENIUS ZEITSCHRIFT FUR ANALYTISCHE CHEMIE,
1978, 291 (02)
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