With （NH4）2HPO4 as a chemical modifier,trace lead in a dinosaur skeleton fossil and its adjoining rock was determined by electrothermal atomization atomic absorption spectrometry.The preliminary analytical results s...With （NH4）2HPO4 as a chemical modifier,trace lead in a dinosaur skeleton fossil and its adjoining rock was determined by electrothermal atomization atomic absorption spectrometry.The preliminary analytical results showed that the lead level in the adjoining rock was generally higher than that in the fossil.The recovery of the method was in the range of 96% to 113%,and the relative standard deviation of the method was less than 9.5%.展开更多
文摘With （NH4）2HPO4 as a chemical modifier,trace lead in a dinosaur skeleton fossil and its adjoining rock was determined by electrothermal atomization atomic absorption spectrometry.The preliminary analytical results showed that the lead level in the adjoining rock was generally higher than that in the fossil.The recovery of the method was in the range of 96% to 113%,and the relative standard deviation of the method was less than 9.5%.
