Fig. 3

d Thermal stressed sample chromatograms (100 μg mL− 1). e Photo stability stressed sample chromatograms (100 μg mL− 1). f Humidity stressed sample chromatograms (100 μg mL− 1)
d Thermal stressed sample chromatograms (100 μg mL− 1). e Photo stability stressed sample chromatograms (100 μg mL− 1). f Humidity stressed sample chromatograms (100 μg mL− 1)