”—” means that no relevant report data.
3.2.2 Trace elements in P. nagi kernel oil
The trace elements in this oil was confirmed using ICP-MS. Firstly,
series of standard working solutions were successively measured to build
the standard curve, and the regression equations were obtained
accordingly. The regression equation, correlation coefficient and linear
range of each element are shown in table 5 . The trace elements
in this oil was tested accordingly and the contents were calculated
according to the regression equations and the results also showed intable 5 . From table 5 , we can know thatP. Nagi kernel oil is rich
in nine essential microelements beneficial to human health (it is
reported that 18 kinds of essential microelements have been conformed as
necessary to human health and life, namely, iron, copper, zinc, cobalt,
manganese, chromium, selenium, iodine, nickel, fluorine, molybdenum,
vanadium, tin, silicon, strontium, boron, rubidium, arsenic, etc.8).
Table 5. Regression equation, correlation coefficient (R) and
detection limit
and the contents of trace elements in P. nagi kernel oil