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CN-122016982-A - Sewage toxin tracing method

CN122016982ACN 122016982 ACN122016982 ACN 122016982ACN-122016982-A

Abstract

The invention belongs to mass spectrometry technology, and particularly provides a sewage toxicity tracing method which comprises the steps of A1 designing a tracing scheme according to the toxicity abnormality of sewage sampling nodes, wherein the scheme comprises sampling nodes of an upward level of sewage convergence countercurrent, A2 collecting and analyzing the concentration of a drug substance and a metabolite thereof of raw water samples of all sampling nodes of the upper level of the sampling nodes of the toxicity abnormality, identifying the sampling nodes of the toxicity abnormality of the level, circulating to the sampling nodes of the last level, A3 analyzing the sewage convergence condition in the sampling nodes of the last level, screening out a minimum building unit of suspected toxicity sources, A4 entering the minimum building unit, collecting evidence and determining a person involved in the toxicity. The invention has the advantages of accurate and quick tracing, and the like.

Inventors

  • BI LEI
  • HONG HUANHUAN
  • ZHANG WENTIAN
  • WEN LUHONG

Assignees

  • 宁波华仪宁创智能科技有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (10)

  1. 1. The sewage toxin tracing method is characterized by comprising the following steps: A1. According to the abnormal condition of the sewage sampling nodes, designing a tracing scheme, wherein the scheme comprises sampling nodes of an upward level of sewage converging countercurrent; A2. Collecting and analyzing the concentration of the original water samples of all sampling nodes at the upper layer of sampling nodes with abnormal toxicity and the concentration of metabolites thereof, and identifying the sampling nodes with abnormal toxicity at the layer; Cycling to the last stage sampling node; A3. analyzing the sewage collection condition in the last stage sampling node, and screening out the minimum building unit of suspected toxic sources; A4. and entering the minimum building unit, collecting evidence, and determining the emission sources of the toxic personnel and the drugs.
  2. 2. The method according to claim 1, wherein the sampling and rapid detection in step A2 and/or A4 is performed by a rapid on-site detection mobile cart having an intelligent automatic sampler, a cryogenic storage device and a miniaturized mass spectrometer, which forms a mobile rapid response platform.
  3. 3. The traceability method according to claim 2, wherein the detection comprises two stages of on-site rapid screening and laboratory review confirmation, namely on-site rapid screening by using a miniaturized mass spectrometer and review of screening results by using a large mass spectrometer, and the detection method of the miniaturized mass spectrometer is consistent with a pretreatment flow and the large mass spectrometer.
  4. 4. The tracing method of claim 1, wherein said gathering evidence comprises wiping samples of door handles, door frames, seams between door frames and door locks, or doorway shoe chest of all rooms within said minimum building unit.
  5. 5. The method of claim 1 or 4, wherein step A4 is combined with public security multi-source information, including medical history, working environment, social risk, or travel record, to determine suspected toxic rooms or personnel.
  6. 6. The tracing method according to any one of claims 4 and 5, wherein in step A4, the suspicious degree score of each room in the minimum building unit is calculated and outputted by an algorithm model to guide the investigation direction, and the algorithm model fuses environmental evidence, informative evidence and space-time evidence, and the parameters thereof are set based on expert experience of the no-toxicity tracing scene and can be dynamically adjusted.
  7. 7. The tracing method according to claim 1, wherein the sampling nodes comprise a sewage treatment plant, a pump station, a main pipe, a branch pipe and a last stage sampling node connecting pipe, and the last stage sampling node is a cell or a village.
  8. 8. The provenance method of claim 1, wherein the minimum building unit comprises a building, hotel, casino, factory, hospital, or school.
  9. 9. The tracing method of claim 1, wherein the critical data of the whole tracing process is uploaded to the blockchain certification platform, wherein the critical data comprises sampling time, sampling place, detection raw data, mass spectrum detection result, information research judgment record, biological sample and object surface residue detection report, and the integrity, authenticity and non-tamper property of the evidence chain are ensured.
  10. 10. The tracing method according to any one of claims 1 to 9, wherein the detection device used in the tracing method is connected to an internet of things system, and the detection data is uploaded to an intelligent management and control platform in real time, so as to realize the integrated analysis of the multi-source data and the dynamic monitoring of the tracing process.

Description

Sewage toxin tracing method Technical Field The invention relates to a sewage detection technology, in particular to a sewage toxin tracing method. Background By monitoring trace drugs and metabolites thereof in sewage, urban or regional toxin levels are evaluated, a toxin source can be found by further tracing, and intelligent toxin inhibition operation monitored from the source is supported. The existing sewage toxicity tracing method focuses on single-point or local improvement, and does not have a systematic and standardized overall method. CN114324804A provides a detection based on pump station reserved sample sewage sample, to detecting personnel's body fluid or hair reserved sample detection in the unusual region, the suspicious personnel of screening + laboratory detects and confirms the drug-taking personnel, but involves that the scope is big, timeliness is poor, only does local analysis and can't accurately trace to the source. CN114660249a, although referring to cell-building-door handle wiping, is a simplified on-site detection device and method, and the detection sensitivity (reagent plate+spectroscopic technique) is different from that of mass spectrometry (mass spectrometry of 71 psychoactive substances and metabolites such as etomidate and cotinine test in water sample are published by reference to the security department of security, no. center, JD/Y JY 02.15-2023). CN115049284B constructs a macro toxicity evaluation index system, but focuses on macro "evaluation" and "early warning" of the system itself, and does not relate to the technical problem of tracing. CN117198422B proposes a concept of tracing by using multiple model couplings, and the core of the concept is based on environmental monitoring data and water quality model calculation such as air quality monitoring data, soil quality monitoring data, water quality monitoring data, satellite remote sensing data, and the like, and the tracing is complex and not traced to the source. Therefore, the prior art has the common defects of insufficient tracing precision, systematic deficiency, weak evidence chain and insufficient accuracy. Therefore, a solution capable of systematically integrating reverse tracking, accurate and rapid detection, multi-source evidence fusion and standardized operation is urgently needed in the field so as to solve the problem of accurate positioning of the last kilometer of sewage toxicity tracing. Disclosure of Invention In order to solve the defects in the prior art, the invention provides a sewage toxin tracing method. The invention aims at realizing the following technical scheme: The sewage toxin tracing method comprises the following steps: A1. According to the abnormal condition of the sewage sampling nodes, designing a tracing scheme, wherein the scheme comprises sampling nodes of an upward level of sewage converging countercurrent; A2. Collecting and analyzing the concentration of the original water samples of all sampling nodes at the upper layer of sampling nodes with abnormal toxicity and the concentration of metabolites thereof, and identifying the sampling nodes with abnormal toxicity at the layer; Cycling to the last stage sampling node; A3. analyzing the sewage collection condition in the last stage sampling node, and screening out the minimum building unit of suspected toxic sources; A4. and entering the minimum building unit, collecting evidence, and determining the emission sources of the toxic personnel and the drugs. Compared with the prior art, the invention has the beneficial effects that. 1. The tracing is accurate, a reverse accurate tracing path is established according to the sewage toxin tracing requirement, and the toxin source is positioned from a kilometer level area to a specific room and even personnel by combining a gold standard mass spectrometry of detection and analysis, so that the accurate positioning problem of tracing the last kilometer is thoroughly solved; 2. The tracing is quick, namely, a mobile vehicle is quickly detected on site, and a cooperative detection mechanism of a miniaturized mass spectrum on-site quick screen and a large-scale laboratory mass spectrum review is utilized, so that quick response from sampling to key result output is realized, and timeliness of the whole tracing process is greatly improved; 3. Innovatively organically integrating sewage toxin data, environment trace enrichment evidence, multi-source public security information and personnel biological samples into a complete system through a standardized process, forming a tamper-proof evidence chain of sewage-environment-material evidence-person evidence, and ensuring the scientificity, standardization and repeatability of a tracing process; 4. The method has good operability and high standardization, and complex traceability work is converted into an operable, verifiable and repeatable standardized flow by integrating digital scheme planning, intelligent sampling equipment and algorithm