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. Author manuscript; available in PMC: 2016 Apr 11.
Published in final edited form as: Spectrochim Acta Part B At Spectrosc. 2016 Feb 1;116:21–27. doi: 10.1016/j.sab.2015.11.008

Table 3.

Recovery values and difference values of Ti- and Zn-based commercial sunscreens tested using the correction factors from powder working standards.

Sample ID Metal Reported XRF (wt%) RV1 ICP-MS (wt%) RV2 DV
SUN01XZ Zn   6.43 10.1 ± 0.01 157.19   7.13 ± 0.02 110.94 34.52
SUN02XZ Zn   4.82 7.85 ± 0.03 163.54   4.70 ± 0.01 97.92 50.26
SUN05TZ Zn   3.21 4.78 ± 0.00 149.38   3.11 ± 0.03 96.89 42.64
SUN06XZ Zn 16.06 22.5 ± 0.01 140.00 17.14 ± 0.15 106.21 27.58
SUN09XZ Zn 11.24 15.6 ± 0.02 139.64 11.20 ± 0.10 100.18 32.91
SUN04TX Ti   1.20 0.54 ± 0.01 45.00   1.25 ± 0.01 104.17 −82.1  
SUN08TZ Ti   0.60 0 0   0.55 ± 0.0 91.67 −200.00
SUN28TZ Ti   3.60 6.66 ± 0.01 185.00   4.38 ± 0.08 121.67 40.94
SUN27TZ Ti   5.40 8.94 ± 0.02 165.56   5.82 ± 0.12 107.78 42.64
SUN33TZ Ti   4.50 6.01 ± 0.02 133.56   4.52 ± 0.03 100.44 28.78