Reference health
Tracing consumption patterns of stimulants, opioids, and ketamine in China by wastewater-based epidemiology
2 of 67 checkable references need attention · checked 2026-07-23
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15 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
References needing attention
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The 15 references without a DOI — listed, not checked
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no DOI — not checkedEPA (1993) Method 350.1: Determination of Ammonia Nitrogen by Semi-Automated Colorimetry
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no DOI — not checkedLucheng Branch of Changzhi Public Security Bureau (2019) Announcement of the Lucheng Branch of Changzhi Public Security Bureau on cracking down on caffeine and methcathinone drug-related crimes. http://www.lc.gov.cn/xwzx/lcyw/201912/t20191206_1841837.html (In Chinese)
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no DOI — not checkedOffice of China National Narcotic Control Commission (2020) 2019 Annual Report on Drug Control in China (Beijing, China)
no DOI — not checkedRushing R, Burgard DA (2019) Utilizing wastewater-based epidemiology to determine temporal trends in illicit stimulant use in Seattle, Washington. In: American Chemical Society, pp 155–166
no DOI — not checkedThe First National Pollution Source Census Data Compilation Committee (2011) Census data of Pollution Sources, 1st edn. China Environmental Science Press, Beijing
no DOI — not checkedUnited Nations Office on Drugs and Crime (2019) Synthetic drugs in East and Southeast Asia-trends and patterns of amphetamine-type stimulants and new psychoactive substances. (Vienna)
no DOI — not checkedUnited Nations Office on Drugs and Crime (2020a) World Drug Report 2020. (Vienna)
no DOI — not checkedUnited Nations Office on Drugs and Crime (2020b) Synthetic drugs in East and Southeast Asia-latest developments and challenges. (Vienna)
no DOI — not checkedZhang E, Chang F (2000) The classification and elementary analysis for economic use of ephedra in Inner Mongolia. Inner Mongolia Pratacult 4:35–39 (In Chinese)
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