Heartland
Illicit drug consumption estimated by wastewater analysis in different districts of Milan: A case study
INTRODUCTION AND AIMS: Wastewater analysis is a new approach developed to estimate illicit drug (ID) consumption in large communities, such as a city. We tested the ability of this approach to detect differences in consumption in different districts of a city.

Introduction and aims: Wastewater analysis is a new approach developed to estimate illicit drug (ID) consumption in large communities, such as a city. We tested the ability of this approach to detect differences in consumption in different districts of a city.
Design and methods: Consumption of cocaine, heroin, tetrahydrocannabinol (THC) (cannabis active principle), amphetamine, methamphetamine and ecstasy was estimated by analysis of selected drug excretion residues in composite 24 h samples of untreated urban wastewater by liquid chromatography-tandem mass spectrometry. Samples were collected from the inlet of the three main Milan wastewater treatment plants (WWTP), each serving a district of the city (west, center and east). In each WWTP, samples were taken daily for seven consecutive days in November 2010 and March 2011.
Results: We observed significant differences of ID consumption (expressed as mg/day/1000 inhabitants) among districts: consumption of some ID was significantly higher in the eastern district (P < 0.01 for THC, P < 0.001 for cocaine and P < 0.0001 for heroin by one-way analysis of variance), while consumption of methamphetamine and amphetamine was higher in the central area (P < 0.0001). Overall, from 2010 to 2011, ID consumption decreased in all the districts, in line with a recent population survey showing decreases from 25 to 55% in the annual prevalence of ID users in Italy.
Discussion and conclusions: This approach may help to detect ID consumption in different districts of a city and may be useful for planning interventions aimed at specific city areas and substances.
Keywords: Italy; consumption; illicit drug; tandem mass spectrometry; wastewater.
Heartland
30 Best Stoner Coloring Books on Amazon
We’ve put together a comprehensive list of the 30 best stoner coloring books on Amazon! These weed-themed coloring books make …
Read more30 Best Stoner Coloring Books on Amazon
The post 30 Best Stoner Coloring Books on Amazon appeared first on The Cannabis School.
We’ve put together a comprehensive list of the 30 best stoner coloring books on Amazon! These weed-themed coloring books make for a fun activity that helps spark your creativity and imagination. Each coloring book found below will have a direct link to it’s listing on Amazon, this will help you easily view or purchase it. Activities like this help enhance the cannabis experience by allowing the user to concentrate on a fun task. The level of your visual indulgence during your “high” is important in determining how much you’ll enjoy it. In other words, what better tools for meditation and recreation than cannabis and coloring?
The condensed list below contains the links to all the best stoner coloring books found in this article:
Condensed List:
- The Stoner’s Psychedelic Coloring Book
- A Coloring Book For Stoners: Stress Relieving Psychedelic Art For Adults
- Let’s Get High And Color: An Adult Coloring Book
- Stoner Things: Stoner Coloring Book
- Stoner Things Volume 2: Colouring Book for Adults
- Princess Stoner Coloring Book
- Disney Princess Stoner Coloring Book:
- Princess Stoner Coloring Book: Great Coloring Book For Adults Stress Relief & Relaxation
- Princess Coloring Book: Cool and Relaxing Design – Great Coloring Book for Adults Relaxation and Stress Relief
- Disney Stoner Colouring Book:
- The Stoner Babes Coloring Book By Katie Guinn
- Trippy Chicks Adult Coloring Book
- Stoner Coloring Book: The Psychedelic Coloring Book for Relaxation and Stress Relief, Stoner Coloring
- Animals Smoking Weed: Colouring Book By Kristin Harris
- Wiz Khalifa’s Weed Farm Coloring Book
- Fresh Baked Cannabis Coloring Book for Weed Lovers: Volume 3
- Fresh Baked Cannabis Coloring Book for Weed Lovers: Fun Marijuana and Pot Themed Images to Color – Volume 1
- Fresh Baked Cannabis Coloring Book
- Marijuana Strains: Adult Coloring Book
- Stoner Coloring Book: The Stoner’s Psychedelic Coloring Book
- Trippy Advisor- An Irreverent Coloring Book For Adults:
- Day Trip: The Stoner’s Psychedelic Coloring Book
- Stoner Coloring Book: A Psychedelic Coloring Book for Adults
- Not Your Kids Stoner Coloring Book:
- A Psychedelic Coloring Book For Adults:
- Psychedelic Coloring Book
- The Trippy Hippie Coloring Book
- Reefer Madness Mandala and Quote Coloring Book For Adults:
- Stoner Activity Book
- High Life Coloring & Activity Book (Volume 1)

Red, glossy eyes are the trademark of a good high. This stoner coloring book features 25 hand-drawn stoner designs for you to color. With 50 pages in total, you don’t even have to worry about ruining the next page’s design with your color’s tint.
It comes in two price variants, $7.99 for paperback and $20.49 for a spiral bound book, perfect for gifts! Oh and it has a free PDF inside too!
Product Features:
- 25 unique designs
- 50 single side printing on both white and black papers
- Available in paperback and spiral bound variants
- Free PDF!
If you liked this, check out a similar one below:

Price: $4.99

Get your hands on this humorous coloring book which includes 17 unique designs and “black light” versions of 15 of them, making a total of 33 pages to color!
Product Features:
- 66 total pages with 33 single-side printed pages to color
- 17 unique designs
- Glossy paper
- Suitable for pencil colours, markers, pens and crayons

With the title inspired by the Netflix hit show “Stranger Things”, this is a perfect gift for fans of the show! The book includes 16 unique designs and also includes inverted background versions for many of them. One of the best stoner coloring books.
Product Features:
- 31 pages to colour
- 16 unique designs
- Glossy paper
- Suitable for color pencils, pens, markers and crayons.
Not quite satisfied? Check out another “Stranger Things” inspired option below!


Calling all our stoner girls! This Disney princess inspired stoner coloring book has all your favourite Disney princess stories with a 420 twist. Now you get to reimagine all the fairytales while in your most creative state.
Product Features:
- 27 unique designs 54 pages in total
- Single side high quality printed pages
- Suitable for colouring pencils, markers, crayons etc
If you liked this theme, check out similar princess stoner colouring books below!




Another one for our Disney lovers, because who doesn’t love this dynamic six! We can already hear Donald Duck’s high quacks!
Product Features:
- 25 unique illustrations
- High quality paper
- Single side printing
- 8.5*11 inches size

This artistic representation of empowered women and gender fluid people who relish the herb is a wonderful gift for all the intellectual and mindful people in your friend circle. With over 60 intricate images of tattoos, marijuana bouquets, patterned garb, shape-filled backgrounds and gorgeous faces, you’ll find new meanings to life inspired by the art in this colouring book!
Product Features:
- 60 single-sided printed pages
- High-quality paper
- 8.5*11 inches size
- Suitable for pencil colours, crayons, markers etc.
If you liked this artistry, then check out the next similar one below!

The Trippy Chicks Coloring book features mystical women channelling their inner goddesses. Expect to find religious symbols, long locks, reptiles and mandalas.

Presenting another gift option for our stoner guys, although with designs so intricate and detailed, even the girls won’t be able to resist it. You can draw for days on end with this book, filling it with colours and creating your own psychedelic paradise.
Product Features:
- Premium glossy cover
- Single sided pages to avoid bleed through
- 8.5*11 inches size
- High quality white paper

From the Dinosaurs of Jurassic Park to reefer madness and game of stoned, this book is guaranteed to leave you in fits of laughter. Kristin Harris really amped up his game with this one!
Product Features:
- 26 unique images
- Test image to try out your colors
- High-quality paper
- 8.5*11 inches size

Wiz Khalifa is back yet again with a pro-cannabis statement in the form of his new product “The Wiz Khalifa Weed Farm Coloring Book”.
This stress-relieving coloring book is slightly on the pricier edge, going at $14.95, but is rightly so, because with featured iconic images from LA to Amsterdam and events like Danksgiving and Wiz’s Birthday, it’s a direct sneak peek into Khalifa’s weed empire!

The Fresh Baked series is a designer brainchild of independent artists who came together to design fun pot-themed images and humourous marijuana designs for people who like to relieve stress through coloring while high.
Product Features:
- Fun cannabis inspired designs
- Original images
- High-quality paper
- 8.5*11 inches size
- Part of a series of three
If you liked this, be sure to check out Fresh Baked Volume 1 and 2! A perfect gift bundle for Birthdays or Christmas!


Not all Cannabis is the same. There are a ton of varieties and so many different strains to choose from. Check out this colouring book that not only lets you have a fun time with Cannabis, but also educates you on the different varieties out there. The book has illustrations of popular strains like the Harlequin, Grape Ape, Dance World, Cherry Pie, Frankenstein, and Laughing Buddha. One of the best stoner coloring books.
So gather your friends and take turns to color and try the Cannabis varieties drawn in the book, who knows, you may find your next favourite party strain here!
Product Features:
- Paperback
- Unique Illustrations
- Cannabis strain designs
- 8.5*11 inches size

Does your trip make you feel like a part of an alternate universe too? If so, you will love this coloring book that transports you directly into a psychedelic world.
Product Features:
- 30 high quality illustrations
- Single side printing to avoid bleed through
- 8.5 x 11’’ size
If you liked this, check out similar books that also promise a great trip!






Marijuana, meditate and contemplate: that’s our mantra. With 35 unique and beautiful kaleidoscopic designs, color in magical mushrooms and mandalas and make your trip a memorable one.
Product Features:
- 8.5*11 sized pages
- Single-sided printing on white paper
- 35 unique illustrations
- High quality 60lb paper
If you like coloring in Mandalas, check out these two as well:



We saved the absolute best for the last. Get your hands on the Stoner Activity Book that not only has coloring pages, but also crosswords, puzzles, trippy mazes and more for a variety of activities to do while high!
If you like this type of product, also check out this stoner coloring and activity book:

So there you have it! The 30 best stoner coloring books on Amazon! If you enjoyed this list, check out our article on the 30 Best Stoner Gifts on Amazon! Leave a comment with what you would like to see next!
Source: https://www.thecannaschool.ca/best-stoner-coloring-books/
Heartland
Some Oddly Specific Predictions About Films You Should Keep an Eye Out For This Year
A collection of anticipated films that are set to be released in 2021.
Heartland
Airfield Supply Co. And Kiva Confections Launch Breast Cancer Awareness Campaign
Two California-based companies have partnered up to launch a statewide campaign for breast cancer awareness, prevention, and research.
-
Heartland1 week ago
Using CBD For Sleep
-
Heartland1 week ago
New Vaping Bill: Effective March 2021 No More Mail Order Of CBD & Delta-8 THC Vape Carts
-
Heartland1 week ago
Rejuv Boost CBD Oil Reviews and Effective Dosage!
-
Heartland1 week ago
CannaFul Valley CBD Reviews] | REAL PEOPLE and REAL RESULTS |
-
Heartland1 week ago
How to utilize Greg Gutfeld CBD Oil?
-
Heartland1 week ago
5 Hemp CBD Flower Strains You Should Try in 2021
-
Heartland1 week ago
The First Hemp Paper Presidential Coloring Book is made in Missouri
-
Heartland1 week ago
The queen of CBD: 'I want to make cannabis to Jamaica what champagne is to France'