【北京加快#打造数字贸易示范区#】北京加快落实中央决策部署,用足用好服贸会平台作用。国际大数据交易所、北京绿色交易所挂牌成立,全国首家外商独资货币经纪公司、外商独资、保险资管公司等一批标志性项目相继落户。#2021年中国国际服贸会# In recent years, Beijing has ramped up efforts to build a digital trade demonstration zone, attracting an array of major projects, including the Beijing International Big Data Exchange, China Beijing Environment Exchange (now China Beijing Green Exchange), Ueda Yagi Money Broking (China) Co., Ltd., the first wholly foreign-owned money broker in China, as well as Allianz Insurance Asset Management Co., Ltd., China’s first wholly foreign-owned insurance asset management company.
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调查帕隆藏布流域水体水质和水化学特征,分析水体常规指标,包括pH、电导率、含盐量(SAL)、总溶解固体(TDS)和溶解氧(DO).测定水和底泥样品23种金属元素,Ca是水体主要阳离子,水体离子均含量趋势符合Ca>Mg>Fe>K>Na>Mn>Zn>Ba>V>Pb>Cr>Ni>As>Cu>Co>Se>Hg>(Mo、Ag、Sb、Tl、Cd和Be).采用《地表水环境质量标准》(GB3838—2002)及地质累积指数(Igeo)分别评价水质和底泥状况.水体Cu、Se、As、Zn、Cd和Pb达Ⅱ类及以上标准,Hg是潜在污染物,Hg含量略高(最高达0.3μg·L-1),但低于《国家生活饮用水卫生标准》(<1μg·L-1)限量;底泥重金属污染程度较轻,Zn、Pb、Ni、Cu和Cd几乎不存在污染,As是底泥主要污染物,其次为Cr.综合各项指标表明帕隆藏布流域水体水质良好.https://kns.cnki.net/kcms/detail/detail.aspx?dbcode=CJFD&dbname=CJFDLAST2018&filename=HJHX201804031&uniplatform=NZKPT&v=CpXbOzL4vZMvH%25mmd2B3FnVaAyVfZkpbjA8muwwPYj4D1BkSgbhJlOf%25mmd2BiFuBaXKHR1gIs
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