A field sampling method for snow pits

Abstract

The invention discloses a field on-site nivation cirque sampling method. The method comprises a, cleaning nivation cirque sampling tools, devices and sample bottles, b, selecting a nivation cirque position, c, digging a nivation cirque, d, digging a sampling section, e, carrying out sampling and f, packaging the sample. The method has a reasonable design, effectively prevents trace element pollution caused by processes of nivation cirque sampling, realizes convenient and efficient acquisition of a clean nivation cirque sample and can acquire reliable and valuable nivation cirque trace element data.

Description

technical field

[0001] The invention relates to a snow pit sampling method in the field, which is applied to the research field of snow and ice trace elements. Background technique

[0002] Snow pit sampling plays an important role in studying the seasonal and interannual variations of trace elements and the pollution status and sources of trace elements in the modern atmosphere. However, early reliable data were very limited, mainly because the concentrations of trace elements in polar and mountain glacier surface snow were very low, even below pg / g (10 -12 g / g) level, coupled with the extremely harsh conditions in the field, the collection of snow pit samples in the field is not standardized, and the snow pit samples are extremely easy to be polluted. The study of trace element records is particularly important. Contents of the invention

[0003] In view of the above, the purpose of the present invention is to provide a field snow pit sampling method: adopt standardize...

Examples

Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] A method for sampling snow pits in the field, the steps comprising:

[0024] (1) Preparation and cleaning of snow pit sampling tools, utensils, and sample bottles: In the ultra-clean laboratory, clean the aluminum shovel, plastic shovel, scraper, sampling tube, and plastic hammer for snow pit sampling with dilute nitric acid, and clean them with a double-layer Plastic bags are used for packaging, marking and boxing; in addition, cold-proof clothing, clean clothes, disposable plastic gloves, masks, etc. required for sampling should also be packaged together with sampling tools in the laboratory for easy access during sampling;

[0025] (2) Selection of the location of the snow pit: the location of the snow pit 1 is the flat area of ​​the accumulation area above the glacier, and it is 100-300 m away from the two places upwind of the scientific research camp, so as to a...

technical field

[0001] The invention relates to a snow pit sampling method in the field, which is applied to the research field of snow and ice trace elements. Background technique

[0002] Snow pit sampling plays an important role in studying the seasonal and interannual variations of trace elements and the pollution status and sources of trace elements in the modern atmosphere. However, early reliable data were very limited, mainly because the concentrations of trace elements in polar and mountain glacier surface snow were very low, even below pg / g (10 -12 g / g) level, coupled with the extremely harsh conditions in the field, the collection of snow pit samples in the field is not standardized, and the snow pit samples are extremely easy to be polluted. The study of trace element records is particularly important. Contents of the invention

[0003] In view of the above, the purpose of the present invention is to provide a field snow pit sampling method: adopt standardize...

Examples

Embodiment Construction

[0022] The present invention will be further described below in conjunction with accompanying drawing:

[0023] A method for sampling snow pits in the field, the steps comprising:

[0024] (1) Preparation and cleaning of snow pit sampling tools, utensils, and sample bottles: In the ultra-clean laboratory, clean the aluminum shovel, plastic shovel, scraper, sampling tube, and plastic hammer for snow pit sampling with dilute nitric acid, and clean them with a double-layer Plastic bags are used for packaging, marking and boxing; in addition, cold-proof clothing, clean clothes, disposable plastic gloves, masks, etc. required for sampling should also be packaged together with sampling tools in the laboratory for easy access during sampling;

[0025] (2) Selection of the location of the snow pit: the location of the snow pit 1 is the flat area of ​​the accumulation area above the glacier, and it is 100-300 m away from the two places upwind of the scientific research camp, so as to a...

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