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SUMMARY:STABILITY OF THE ELEMENT COMPOSITION OF VEGETABLE SAMPLES WITH LON
 G -TERM STORAGE
DTSTART;VALUE=DATE-TIME:20160705T090000Z
DTEND;VALUE=DATE-TIME:20160705T100000Z
DTSTAMP;VALUE=DATE-TIME:20260416T024050Z
UID:indico-contribution-1241@indico.inp.nsk.su
DESCRIPTION:Speakers: Elena Khramova (Central Siberian Botanic Garden\, SB
  RAS)\nThe content and composition of the elements of vegetable samples ha
 ve been first analyzed in connection with storage periods by the method of
  X-ray fluorescence analysis\, using synchrotron radiation (SR XRF).\nThe 
 objects of studying were the samples of Pentaphylloides fruticosa\, cultiv
 ated in the gradient of radionucleotide contamination over the territory o
 f the East-Ural radioactive trace (EURT)\, formed in 1957 due to the accid
 ent at the IM “Mayak” (the town of Ozersk\, Chelyabinskaya oblast) and
  in the conditionally “background” region of the observation area. In 
 2005\, the samples of the P. fruticosa  leaves and stems\, collected in fo
 ur EURT regions\, were analyzed and in 2015 the same samples were analyzed
  after a 10-year storage period.\nIt has been established that the element
  composition of the samples was almost the same. In 2005\, 18 elements wer
 e discovered\, and in 2015 additional two elements (Cr and Nb) were determ
 ined\, probably\, because of the improving potentialities of the method.\n
 The content of K\, Ca\, Mn\, Fe\, Co\, Cu\, Zn and Sr in the samples of 20
 05 and 2015 remained practically the same. As a rule\, the values varied b
 y 1 – 50% \, depending on the organ and the environment. More considerab
 le variations were observed in the content of Ti\, V\, Ni\, As\, Rb\, Br\,
  Y\, Zr\, Mo and Pb\, which may be assigned to the increase in the relativ
 e standard deviation (%) as the measure of analysis reproducibility for th
 ese elements. In this case\, as compared with 2005\, in 2015 a noticeable 
 decrease (2-4-fold) was recorded in the content of As and Br in the sample
 s of the leaves except for those from the “background” region for whic
 h the difference was only 30-35%.\nThus\, the element composition of P. fr
 uticosa\, analyzed just after collection\, and the element composition of 
 that kept for 10 years\, were similar. The most stable are K\, Ca\, Mn\, F
 e\, Co\, Cu\, Zn and Sr. The tendencies to element accumulation by plants 
 in the gradient of nucleotide pollution were preserved independent of stor
 age period.\n\nhttps://indico.inp.nsk.su/event/3/contributions/1241/
LOCATION:Budker INP 2nd and 3rd floors
URL:https://indico.inp.nsk.su/event/3/contributions/1241/
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