Abstract：
:Forty-six elements have been detected in fresh banana pulp purchased weekly in Pittsburgh, PA for the past twelve years (1968-1980). Samples were prepared by lyophilization or low temperature ashing. Analyses were performed using X-ray fluorescence spectrometry, optical emission spectrometry, atomic absorption spectrometry, and wet chemistry. Whenever possible, comparative data from the literature are included. No comparative data were found for Rb, Cs, Li, Ag, Be, Ga, La, Ce, Ge, Sn, Ti, Zr, Sb, Bi, and Te. Bananas accumulate K, Mg, and B in comparison to their Na, Ca, and Al content. The K content has been rising steadily since 1968. Lead and Hg quantities have not materially changed during the pat three decades. Arsenic concentrations in bananas declined in the late 1960s and early 1970s, but have been rising since 1978, possibly owing to the increased use of As-bearing pesticides. Other toxic elements such as Be and Te are present in very small quantities and are detected infrequently. An appendix is attached that presents the chemical composition of orchard leaves NBS 1571 obtained by the methods utilized in this study.
journal_name
Biol Trace Elem Resjournal_title
Biological trace element researchauthors
Cowgill UMdoi
10.1007/BF02789122subject
Has Abstractpub_date
1981-03-01 00:00:00pages
33-54issue
1eissn
0163-4984issn
1559-0720journal_volume
3pub_type
杂志文章abstract：:Preoperative diagnosis of papillary thyroid carcinoma (PTC) comprises numerous diagnostic procedures which are mostly applicable in tertiary institutions. Normal thyroid function depends on the presence of many trace elements and copper (Cu) and zinc (Zn) are some of those. The study is based on retrospective review o...
journal_title：Biological trace element research
pub_type： 临床试验,杂志文章
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journal_title：Biological trace element research
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pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Biological trace element research
pub_type： 杂志文章
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更新日期：1998-03-01 00:00:00
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pub_type： 杂志文章
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