Chinese-Made Yaxin-1105 Photosynthesis System Supports High-Level Publication on PAH Remediation and Spinach Health

A research team led by Ghulam Murtaza (Yunnan University, China), Muhammad Usman and Muhammad Azam (Shanghai Jiao Tong University, China), Zeeshan Ahmed (Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences), Sajad Ali (King Faisal University, Saudi Arabia), Khairiah Mubarak Alwutayd (Princess Nourah bint Abdulrahman University, Saudi Arabia), and Rashid Iqbal (The Islamia University of Bahawalpur, Pakistan; Western Caspian University, Azerbaijan) has published a high-level original paper in Environmental Geochemistry and Health (Springer Nature, 2026, DOI: 10.1007/s10653-026-03176-x). The article is titled "Synergistic effects of foliar selenium nanoparticles and aged cellulose-derived biochar on PAH immobilization and spinach health in contaminated soils."

The team's photosynthetic and gas-exchange measurements were conducted using the Yaxin-1105 portable photosynthesis system, produced by Beijing Yaxinliyi Science and Technology Co., Ltd. (北京雅欣理仪). The Yaxin-1105 was used to measure transpiration rate (Tr), net photosynthesis rate (Pn), and stomatal conductance (Gs) of spinach plants subjected to naphthalene and benzo(a)pyrene stress across eight treatments.

The study demonstrated that three-year-aged cellulose-derived biochar (CBC3) improved transpiration rate, stomatal conductance, and photosynthetic performance by 49.32%, 80.26%, and 40.10%, respectively. The combined foliar SeNP + aged CBC treatment further enhanced these parameters by 99.94%, 119.61%, and 79.38%. The Yaxin-1105 data were instrumental in quantifying these improvements and linking them to reduced PAH bioavailability, enhanced antioxidant enzyme activities (SOD increased by 49.78–120.11%; CAT by 69.48–140.11%), and decreased lipid peroxidation (MDA reduced by 28.33–39.15%).

Published by Springer Nature, this work highlights a sustainable strategy for remediation of contaminated agricultural soils and protection of food security. The successful application of the Yaxin-1105 in this international collaboration demonstrates the capability of Chinese-designed scientific instruments to support world-class research in environmental science, plant physiology, and sustainable agriculture. Beijing Yaxinliyi continues to empower researchers worldwide with reliable, precise, and field-ready photosynthesis measurement solutions.

About Beijing Yaxinliyi (北京雅欣理仪)

Beijing Yaxinliyi  Technology Co., Ltd. is a leading Chinese manufacturer of portable photosynthesis systems, chlorophyll fluorescence instruments, and plant physiology measurement devices. The Yaxin-1102G and Yaxin-1105 series are widely used in plant science, agronomy, environmental stress physiology, and ecological research. Products are trusted by research institutions and universities in China and abroad.

Beijing Yaxinliyi Technology Co., Ltd.