摘要
以过氧化氢、硫酸钠和氯化钠为主要原料,制备包膜硫酸钠/过氧化氢/氯化钠加合物。对加合物的表层结构、稳定性能和释放性能进行分析,结果发现:该加合物颗粒表层为松散的大孔状膜,在空气中敞开放置10 d后包膜加合物分解率只有1.23%,在pH值为6.0,7.0,8.5和10.0的水中5m in内过氧化氢释放率均大于50%。将该物质分别按1.0、2.0、3.0 g/m3的用量投放在南美白对虾养殖池塘中,10 m in后,3个试验池水体溶氧分别比起始状态提高11.6%,18.2%和26.2%,约20 m in溶氧达到最大值,分别比相同时刻对照池高出27.5%,32.5%和40%,相同时刻水体溶氧随投放量的增加而升高;对照池在试验开始后约20 m in南美白对虾浮头,投放量为1.0 g/m3的试验池约60 m in后有少量南美白对虾浮头,另两个试验池一直未见南美白对虾浮头。
The coated sodium sulphate-hydrogen peroxide-sodium chloride adduct was prepared mainly from hydrogen peroxide, sodium sulphate and sodium chloride. Surface structure, stability and release profiles of the coated adduct were analyzed. It was found that layers on the surface of the particles were loose macro-voids membrane. The decomposing rate of hydrogen peroxide was only 1.23% in the air for 10 d and the release rate in 5 min was over 50% in water with pH 6.0, 7.0, 8.5 and 10. The coated adduct was used into water in three white-leg shrimp Litopenaeus vannamei juvenile culture ponds at a rate of 1.0, 2.0 and 3.0 g/m^3 （ adduct to water）, respectively. The results showed that the dissolved oxygen （DO） levels in the water increased by 11.6%, 18.2% and 26.2% 10 min after administration of the coated adduct compared with the initial stage, and, the DO level was the maximum, 27.5%, 32.5% and 40% higher than that in the control tanks about 20 min after administration of the coated adduct, respectively. The white-leg shrimp juvenile hypoxia was found in the control ponds about 20 min after administration of the coated adduct. A few juveniles appeared hypoxia in the experimental pond supplemented with at a rate of 1.0 g/m^3 coated adduct only about 60 min after the administration. In other two experimental ponds, however, the phenomenon was not found.
出处
《水产科学》
CAS
北大核心
2006年第11期541-544,共4页
Fisheries Science
关键词
硫酸钠/过氧化氢/氯化钠加合物
稳定性能
释放性能
增氧
南美白对虾
sodium sulphate-hydrogen peroxide-sodium chloride adduct
stability
release profiles
oxygen supply
Litopenaeus vannamei juvenile
