1) vanadium toxicity
钒毒害
2) vanadium harm
钒危害
3) vanadium poisoning
钒中毒
1.
Results indicated that sodium accumulation on USY sample could accelerate the vanadium poisoning of USY zeolite and the destruction of crystalline structure and the decrease of the surface area, bore volume, surface acid sites, and cracking activity of the zeolite.
采用 MAT、XRD、NH3 -TG-TPD、BET技术 ,考察了钠离子与捕钒钠剂对钒中毒 USY分子筛结构和性能的影响。
4) poison
[英]['pɔɪzn] [美]['pɔɪzṇ]
毒害
1.
Research Development about Heavy Metal Poison Plants and Plants’ Resistance Mechanism;
植物重金属毒害及其抗性机理研究进展
2.
As extensive use of carbofuran seriously threatens the wetland birds in China,a brief introduction is presented to the status quo of the progress of in situ protection of wetland birds and the use of carbofuran in China,toxicity and poisoning path of the substance to the birds,and major affected areas.
介绍了我国湿地鸟类就地保护现状以及克百威农药在我国的使用,对鸟类的毒性、毒害途径和主要影响区域。
5) toxicity
[英][tɔk'sɪsəti] [美][tɑk'sɪsətɪ]
毒害
1.
Heavy metal toxicity and resistant mechanisms in woody plants;
木本植物重金属毒害及抗性机理
2.
Advances in copper toxicity to plants;
Cu对植物毒害研究进展
3.
Effects of Zn toxicity on Ceratophyllum demersum L under low pH value;
模拟酸雨引起水体pH下降导致Zn对金鱼藻的毒害
6) vanadium [toxic metal]
钒〔有毒金属〕
补充资料：钒磷铁矿提钒
钒磷铁矿提钒
extraction of vanadium from the bear vanadium phosphosiderite
和94％。fantintiekuang tifan钒磷铁矿提钒(extraetion of vanadium frombear vanadium phosphosiderite)以含钒磷铁矿为原料制取五氧化二钒的帆提取方法。主要包括钠化焙烧和湿法漫出两道作业。直接用作提饥原料的是含饥磷铁。 含钒磷铁是饥磷铁矿电炉生产单质磷和磷肥的副产品。钒磷铁矿分布在美国爱达荷、蒙大拿、怀俄明、犹他等州，含Pz05 24%~32%、V:O。0.267%~0.625%和少量的铬、镍和钥等。美国克尔麦吉(Kerr-MeGee)化学公司所用的含钒磷铁含饥3.26%~5 .2%、磷24.7%~26.6%、铁59.9%一68.5%、铬3.4%一5.7%、镍。.84%~1%。先将含钒磷铁磨至粒度小于。.42mm，配入1.4倍纯碱和。.1倍的食盐在回转窑中于1043~lo63K温度下焙烧，钒便转变成水溶性的钠盐。熔烧块在加热到沸腾的水中浸出，钒、铬、磷均溶入浸出液。浸出浆液经过滤处理。滤液冷却结晶析出磷酸钠晶体，用离心机分离。晶体中如仍含有钒和铬，可用水重溶后再结晶分离，直到获得合格的磷酸钠(NaaPO;)晶体产品。若Na3PO‘结晶母液含磷高于0. 989/L时则要加入CaclZ，使其生成磷酸钙沉淀，然后水解回收钒。随后往母液中加入硝酸铅，沉淀出铬酸铅。此工艺的钒、铬和磷的回收率分别为85%、65%
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条