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Preparation method and application of biological material for determining mercury exchange flux between water/gas interfaces

A biological material and water determination technology, applied in the direction of analytical materials, measuring devices, chemical instruments and methods, etc., can solve the problems of complex operation, high cost, expensive equipment, etc., and achieve the effect of simple operation, low cost and simple method

Pending Publication Date: 2020-05-19
GUIZHOU ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, we often use an active sampling technology to measure the water / air flux when measuring the water / air exchange flux. This sampling technology currently uses expensive sampling instruments and installations such as flux boxes on the water surface. Not only the equipment is expensive, the cost is high, but also the operation is more complicated

Method used

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  • Preparation method and application of biological material for determining mercury exchange flux between water/gas interfaces
  • Preparation method and application of biological material for determining mercury exchange flux between water/gas interfaces
  • Preparation method and application of biological material for determining mercury exchange flux between water/gas interfaces

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Embodiment 1

[0025] Example 1: The preparation method and measurement method of the biological material for measuring the mercury exchange flux between the water / air interface of the present invention includes the following steps:

[0026] (1) Collect moss (moss) from the cleaning area with relatively low pollution, try to collect the biological bryophytes attached to the rocks, select plants larger than 6cm in diameter, remove debris and dead stems and leaves, and wash the soil and floating layer particles with distilled water;

[0027] (2) Soak in dilute sulfuric acid or hydrochloric acid with a concentration of 0.5moL / L~ .0moL / L for 24 hours, preferably 0.5moL / L hydrochloric acid;

[0028] (3) Wash it repeatedly with distilled water, and place it in the washing place to air-dry naturally to obtain moss bio-absorbent material.

[0029] (4) Production of nylon bag: use mesh (2.0×2.0mm) to make a nylon bag with a specification of 10×10cm, soak in dilute acid, rinse with deionized water, and place t...

Embodiment 2

[0038] (1) The moss collection site is Hupnum Piumafoeme Wills (Hupnum Piumafoeme Wills) in Panlong Mountain, Guiyang City, Guizhou Province. Take plants larger than 6cm in diameter, remove debris and dead stems and leaves, wash the soil and floating dust particles with water, and use 0.5moL hydrochloric acid Soak for 24 hours. Wash it repeatedly with distilled water and place it in the washing place to air dry naturally to obtain moss bio-absorbent material.

[0039] (2) Hang the moss bog prepared above on the Caohai Lake in Guizhou, 1.5m above the water surface, and collect samples during dry and wet periods. At the same time, the traditional original flux box method was used to compare the exchange flux of mercury at the water / air interface at the suspension site. The flux box is connected with the CARDLS-A (AAS) mercury measuring instrument, and the flux box is fixed and floating on the lake with pneumatic tires.

[0040] (3) Weigh 0.3g ± 0.0001 of the collected sample accord...

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Abstract

The invention discloses a preparation method and applications of a biological material for determining mercury exchange flux between water / gas interfaces. The preparation method comprises the following steps: (1) collecting moss, selecting a plant which is directly greater than 6 cm, removing impurities and dead stems and leaves, and cleaning soil and floating layer particles with distilled water;(2) soaking for 12-36 hours by using dilute sulfuric acid or hydrochloric acid with a concentration of 0.5-1.0 moL / L; and (3) repeatedly washing with distilled water, and naturally air-drying in a washing place to obtain the moss biological adsorption material. According to the invention, the method for determining the mercury exchange flux between the water interface and the gas interface is extremely low in cost; and the moss biological adsorption material is prepared from bryophyte through simple treatment, and then the mercury exchange flux between the water interface and the gas interface is determined through the moss biological adsorption material, so that the method is simple, convenient, low in cost, accurate in monitoring result and easy to operate and has good practicability and important application and popularization value.

Description

Technical field [0001] The invention relates to a preparation method and application of a biological adsorption material, in particular to a preparation method and application of a biological material for measuring the mercury exchange flux between a water / air interface, and belongs to the technical field of environmental protection. Background technique [0002] Mercury is the only metal that can exist in a liquid state at room temperature and is volatile. It exists in the environment in a variety of chemical forms, and it continuously migrates and transforms among water bodies, atmosphere and soil. Among them, the soil, water and the atmosphere are called the "source" and "sink" of mercury. On the one hand, mercury is released from the water and soil to the atmosphere. Therefore, the exchange flux of mercury at the interface between the soil and the water body to the atmosphere is a study of the mercury An important monitoring content exchanged in the environment. Monomer merc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30G01N33/00G01N21/31
CPCB01J20/24G01N33/00G01N21/31
Inventor 王雅洁杨冰陈恺汪盼利谭红何锦林郝淼张成梅于杰陶衡
Owner GUIZHOU ACAD OF SCI