Funding for this research was provided by:
the People's Government of Shaanxi Province of China (2016CG-10)
Shaanxi University of Science and Technology (BJ15-21)
Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University (BS201703)
Shaanxi Educational Committee (17JK0111)
Article History
Received: 21 March 2018
Accepted: 22 June 2018
First Online: 29 June 2018