4.4 海洋环境中油的自净化作用 一、蒸发 二、溶解 三、乳化作用 四、光化学氧化作用 五、微生物降解作用 4.5 海洋油污染的控制与处理 海上溢油的一般处理过程 吸油材料 油处理剂

pH of a buffer and buffer capacity Example: For a buffer solution consisting of 0. 1 M acetic acid and o1M sodium acetate the ph of the solution is 4.75 HAc= i If an amount of hydrochloric acid equivalent to 10% of the acetate present, is added to the buffer, what is the new pH of the solution?

Good Ozone and Bad Ozone Stratospheric ozone protect lives on Earth from harmful effects of UV radiation. .Iropospheric ozone: Causing respiratory distress and eye irritation Destroying plants Producing cracks in rubber Ozone is a strong oxidant, reacts with molecules containing C=C double bonds, forming epoxides

Whether and climate Weather is the condition of the atmosphere in terms of temperature, humidity, winds and precipitation Climate is defined as the average weather over various time periods ranging from a few weeks to decades to geological timescales Whether and climate are ultimately determined by location, topography, and the exchange of radiant energy between the Sun, Earth, and space

The discovery of the ozone hole The British Antarctic Survey has been monitoring for many years, the total column ozone levels at its base at Halley bay in the antarctica Monitoring data indicate that column ozone levels have been decreasing since 1977. This observation was later confirmed by satellite

Toxic metals Some metals are essential for the normal development and well-being of humans and other creatures They include Na, K, ca, Mg, cu, Cr, and Zn Other metals are toxic even when present in an organism at very low concentrations Examples: Antimony, Arsenic, Barium

Chapter 1.a Fable for Tomorrow There was once a town in the heart of america where all life seemed to live in harmony with its surroundings The town lay in the midst of a checkerboard of prosperous farms, with fields of grains and hillsides of orchards where in spring white clouds of bloom drifted

一、本章基本要求: 掌握水溶液中H浓度的计算方法,滴定过程中浓度的变化规律,理解化学计量点、滴定终点和滴定突跃的含义,掌握酸碱被准确滴定的条件,重点掌握酸碱滴定法在水质分析中的应用

Acute(急性) and chronic(慢性) toxicity Acute toxicity refers to a rapid and serious response to a high but short-lived dose Acute poisons interfere with essential physiological processes, leading to a variety symptoms of distress, even death Chronic toxicity refers to a time-lagged response to a relatively low but prolonged exposure

一、铅蓄电池与再生铅行业发展现状 二、环保现状与存在问题 三、目标 四、铅蓄电池相关环保政策、法规、标准 五、铅污染防治对策 六、亟待研究解决的问题 七、环保政策对铅产业的影响 八、铅蓄电池行业发展趋势