Concentration of Inorganic Elements Content in Benthic Seaweeds of Fernando de Noronha Archipelago by Synchrotron Radiation Total Reflection X-Ray Fluorescence Analysis (SRTXRF)

Table 2

Experimental and calculated mean relative sensitivity, 𝑆^′_𝑖, and mean standard deviation for chemical elements emitting X-K rays for 19≤𝑍_𝑖≤38.

Element	𝐙𝐢	𝐒^′𝐢 (experimental)	𝐬(𝐦)^𝐚	𝐒^′𝐢(calculated)
K	19	0.053007	0.004082	0.060650
Ca	20	0.118720	0.006506	0.093774
Ti	22	0.200669	0.015206	0.203081
Cr	24	0.329118	0.017632	0.381365
Fe	26	0.632468	0.027613	0.613014
Ni	28	0.810042	0.030792	0.832589
Zn	30	0.930767	0.025492	0.943175
Se	34	0.665939	0.051780	0.666817
Sr	38	0.190190	0.019045	0.195293

^𝑎𝑠(𝑚) = standard deviation =𝑆^′_𝑖(exprimental)/√𝑛, 𝑛=9.