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Fig. 4 | Heritage Science

Fig. 4

From: Verifying the feasibility of using Hand-Held X-ray fluorescence spectrometer to analyze Linqing brick: evaluation of the influencing factors and assessing reliability

Fig. 4Fig. 4

Point by point graphs of HH-XRF measurements against ICP-OES data. Impact of in situ HH-XRF data adjustment using ICP-OES data is demonstrated between pre- and post-correction rows. Relative proximity (RP) gives an indication of HH-XRF inaccuracy when compared to a reference value (ICP-OES data) and is calculated by RP = absolute (100-recovery value × 100)

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