Fig. 2: Representative five-point standard curve from a handheld smartphone device for field measurements. | Microsystems & Nanoengineering

Fig. 2: Representative five-point standard curve from a handheld smartphone device for field measurements.

From: Smart-phone, paper-based fluorescent sensor for ultra-low inorganic phosphate detection in environmental samples

Fig. 2

Error bars represent standard error. Corrected fluorescence intensity is a metric which subtracts the average intensity in the desired measurement zone by the average intensity in a background zone32. This technique minimizes measurement error due to fluctuations in the light source intensity or camera performance

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