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The study aims to investigate the mediating role played by environmental attitude and environmental sensitivity in the influence of environmental knowledge on pro-environmental behavior. Specifically, the study examined whether both environmental attitude and environmental sensitivity act as serial mediators between environmental knowledge and pro-environmental behavior. This study also explored whether there are gender differences in how environmental knowledge affects pro-environmental behavior through environmental attitude and environmental sensitivity.

A survey tool was distributed to university students in the northern region of India who had studied environmental studies as a compulsory subject during one of their semesters in their higher education program. A total of 558 responses were analyzed through nonparametric partial least squares multigroup analysis using PLS-SEM.

The results indicated that environmental knowledge significantly affected pro-environmental behavior. Moreover, environmental attitude and environmental sensitivity played significant mediating roles between environmental knowledge and pro-environmental behavior. Additionally, the results showed that the serial mediation effect of environmental attitude and environmental sensitivity in the relationship between environmental knowledge and pro-environmental behavior was significant. However, the findings did not show any significant gender difference in how environmental knowledge influences pro-environmental behavior, mediated serially by environmental attitude and environmental sensitivity.

Although vast literature is available on the relationship between environmental knowledge and pro-environmental behavior, a few studies have shown environmental attitude and environmental sensitivity as mediators. In addition, this study fills the gap in the existing research by exploring how environmental attitude and sensitivity serially mediate the nexus between environmental knowledge and pro-environmental behavior, particularly across genders.

The purpose of this paper is to fall light on the possibility of using the biopolymer chitosan in gamma dose monitoring.

The chitosan films were irradiated to gamma rays in the range starting from 10 to 120 kGy at a dose rate of 1.4 kGy/h using ⁶⁰Co gamma source. The ultra violet and visible (UV/Vis) spectrophotometry were used to examine the optical properties of chitosan film. Also, Fourier transform infrared (FTIR) analysis was used to detect and trace any change in structural bands that may take place upon irradiation.

Increase in optical density of the chitosan film was recorded at 298 nm that correlated with increasing in the absorbed doses. Change in color of the film from pale yellow to denser yellow was detected upon increasing the absorbed doses. The close investigation for UV/Vis and FTIR analysis nominates the chitosan film to be used as a label-dosimeter in the range of 10–120 kGy depending on chitosan concentrations. The chitosan film has an excellent stability in different environmental conditions with ±3.7% uncertainty in measurements (2σ, approximately equal to a 95% confidence level).

Chitosan film may be used as a medium and high-dose monitor with an acceptable overall uncertainty in routine radiation processing

The useful dose range from 10 to 80 kGy was detected for different concentrations of chitosan (0.5, 1, 1.5 Wt%) that correlated with increasing the absorbed dose, which is assigned to the linear parts in the target response curves. For the dose range 10–120 kGy, the film may be used as label dosimeter with detected color change from pale yellow to dense yellow.