CN111426530A - 一种海洋沉积物石油烃静态释放检测方法 - Google Patents
一种海洋沉积物石油烃静态释放检测方法 Download PDFInfo
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Abstract
本发明涉及环境监测与实验领域,提供了一种海洋中沉积物石油烃静态释放检测方法。解决了以往在研究海洋油污沉积物中石油烃静态释放实验中未能实现海洋拟真化的缺点。运用海洋中天然沉积物与海洋中采取的石油,进行一定比例混合,后进行模拟海底环境进行对油污沉积物进行模拟现实化处理,最后在静态释放装置中进行海洋模拟释放过程。本方法更好的模拟海洋真实环境,便于海洋环境变化的监测与相关实验。
Description
技术领域
本发明涉及一种研究海洋中油污沉积物石油烃静态释放检测方法,尤其涉及化学实验研究。
背景技术
目前,在探究海洋中沉积物石油烃静态释放实验中,油污沉积物的方法一般为:原油溶于石油醚中,后与沉积物混合,得到油污沉积物。此方法容易将原油中组分与沉积物中组分破坏,不利于实验的进行。并且静态释放所用的玻璃仪器较小,不利于模拟现实海洋环境。
因此本领域实验人员一直致力于改进一种实验方法简单,又接近于真实的海洋中沉积物石油烃静态释放检测方法。
发明内容
有鉴于现有的上述缺陷,本发明所要解决的问题是如何更加真实还原海洋中沉积物石油烃静态释放实验方法。
为实现上述目的,本发明提供了一种海洋中沉积物石油烃静态释放检测方法,其包括如下步骤:
a)选择需要配制海域的油污沉积物的所需沉积物类型与所需原油。
b)确定所需油污沉积物浓度。
c)加入正己烷与原油混合后,边搅拌边加入沉积物,后搅拌均匀。
d)正己烷挥发后,在3℃密闭黑暗条件中,静置9天左右。
e)油污沉积物配制完成。
f)将油污沉积物放入静态释放装置中,均匀铺3cm厚度,加上海水。
g)在1h,3h,5h,10h,24h,48h,72h,120h,196h,224h,在4个取样口取水样。
h)用正己烷萃取两遍,上机分析。
i)整理与处理数据。
进一步地,在所述步骤a)中,沉积物类型需用冷冻干燥机进行冷冻干燥。
进一步地,在所述步骤c)中,搅拌需搅拌30分钟以上才能混合均匀。
进一步地,在所述步骤d)中,3℃密闭黑暗条件中,老化9天左右。
与现有的技术相比,本发明的海洋中沉积物石油烃静态释放检测方法能较好的还原海洋中油污沉积物真实状态与条件,便于实验的开展。
附图说明
图1是本发明提供的一种方法流程图;
图2是本发明所用的静态释放装置图;
图3是本发明B柱数据结果图;
图4是本发明C柱数据结果图;
图5是本发明D柱数据结果图。
图标,1-表取样口;2-上取样口;3-中取样口;4-底取样口;5-装置轮子;6-装置底座;7- 装置固定横杆;8-装置固定横杆;9-装置固定横杆;10-C柱;11-A柱;12-B柱;13-D柱。
具体实施方式
举例检测浓度为8000mg/kg的渤海油污沉积物石油烃静态释放,步骤如下:
a)称取8.7g渤海油样与1.23kg的渤海沉积物充分混合。
b)用正己烷完全溶解,边搅拌,边加入沉积物,过程需30min以上
c)正己烷完全挥发,得到油污沉积物,风干,并放入黑暗中3℃条件下老化9天左右。
d)将油污沉积物放入静态释放装置中,均匀铺3cm厚度,缓慢加入海水至顶部。
e)在1h,3h,5h,10h,24h,48h,72h,120h,196h,224h取样点下,在4个取样口取水样。
f)用正己烷萃取水样两遍,后用紫外分光光度计检测石油烃浓度,得到数据。
g)整理与分析数据。
由结果图3,图4,图5,我们可以看到本发明能较好的还原海洋真实的环境,较好获得较为真实的数据,便于我们对海底中沉积物中石油烃静态释放深入了解。
与现有的技术相比,本方法较切合海洋真实情况,便于在实验室中模拟真实海洋环境中,利于开展科学实验。取得较为可靠的实验数据。
以上详细描述了本发明的较佳具体实施例。应当理解,本领域的普通技术无需创造性劳动就可以根据本发明的构思做出诸多修改和变化。因此,凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案,皆应在由权利要求书所确定的保护范围内。
Claims (5)
1.一种测定海洋沉积物石油烃静态释放检测方法,包括油污沉积物配制和静态释放;其特征在于,所述油污沉积物配制具有典型的地域性与现实性的原油与沉积物;所述静态释放装置包括主体装置、取样装置、封口装置、压实装置、固定装置、移动装置;所述主体装置为4根高100cm直径19cm的圆柱体,所述取样装置为主体装置上4个分别间隔20cm的取样口,取样口安装开关式水龙头,所述封口装置为主体装置顶部盖子,所述压实装置为长100cm的杆子,其顶部固定直径为18cm厚度为1cm的圆柱体,所述固定装置为固定主体装置所形成立方体结构,所述移动装置为固定装置下方,固定有4个规格一样的滑轮。
2.一种测定海洋沉积物石油烃静态释放检测方法,其包括以下步骤:
a)选择需要配制海域的油污沉积物的所需沉积物类型与所需原油。
b)确定所需油污沉积物浓度
c)加入正己烷与原油混合后,边搅拌边加入沉积物,后搅拌均匀。
d)正己烷挥发后,在3℃密闭黑暗条件中,静置9天左右。
e)油污沉积物配制完成。
f)将油污沉积物放入静态释放装置中。
g)加入海水后,实验周期为10天,采样,检测水中石油烃。
h)处理数据。
3.如权利要求2所述的油污沉积物配制方法,其特征在于:在所述步骤a)中,沉积物与原油具有显著地域性与现实性。
4.如权利要求2或3所述的油污沉积物配制方法。其特征在于步骤d)中,在3℃密闭黑暗条件下,静置9天,充分还原实际情况中油污沉积物所处的海底环境。
5.如权利要求2所述的静态释放装置,其特征在于:在所述步骤f)中,四根柱子静态释放装置可以同时进行多种油污沉积物的静态释放检测。
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CN114397170A (zh) * | 2022-01-12 | 2022-04-26 | 山东交通学院 | 一种利用超声萃取滩涂地质中石油烃总量的工艺 |
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CN114397170B (zh) * | 2022-01-12 | 2023-10-27 | 山东交通学院 | 一种利用超声萃取滩涂地质中石油烃总量的装置 |
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