presence of these substances

USAGE SUMMARY

The phrase "presence of these substances" is correct and usable in written English.
It can be used when discussing the existence or occurrence of specific substances in a particular context, such as scientific or environmental discussions. Example: "The study focused on the presence of these substances in the water supply and their potential effects on human health."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

8 human-written examples

"Without wanting to diminish the seriousness of this case, in some ways it is a positive message that the presence of these substances was detected so the sport is kept clean".

BBC

Some chemical issues that Geoff?s team deals with have a high-profile, like endocrine-disrupting substances; many chemicals, both natural and man-made, are known to adversely effect the hormone systems of humans and animals, and there is growing concern about the link between the presence of these substances in their environment and their harm to wildlife.

Science Magazine

She seemed excited in the presence of these substances, but wasn't gonna throw one down her neck any time soon.

Vice

If the mere presence of these substances and objects alone do not constitute child neglect or abuse, neither should the mere presence of marijuana.

Huffington Post

The presence of these substances in certain environments, and their recognized AR antagonistic activity at concentrations that may be achieved after chronic exposure is important, and according to some investigators may affect AR-mediated functions such as spermatogenesis [45], [46] and testicular development [47].

Plosone

The presence of these substances triggers the over production of cytokins such as interleukin-1 (IL-1), Interlenkin-6 (IL-6) and Tumor Necrosis Factor-alpha (TNF- alpha) [ 31].

BMC Women's Health

Human-verified similar examples from authoritative sources

Similar Expressions

52 human-written examples

Supervisors must be alert to indications or evidence of the use or presence of controlled substances or alcohol in the workplace.

Stanford University

Analytical protocols were established for a large number of compounds (47) with antimicrobial properties and the collected samples were then screened for the presence of these selected substances.

Water Research

From the results, it is clear that magnitude of these parameters is marginally influenced (increased or decreased) in the presence of these foreign substances, but separation was always possible in each case.

Journal of Analytical Science and Technology

The absence or presence and distribution of these substances in the various groups are also used in legume classification.

Encyclopedia Britannica

Biomarkers are included in the monitoring programmes of Regional Seas Conventions to detect the presence of substances or combinations of substances not previously identified as a concern and to identify regions of decreased environmental quality.

Environmental Sciences Europe

Expert writing Tips

Best practice

When writing scientific reports or articles, clearly specify the substances you are referring to after using the phrase "presence of these substances" to ensure clarity and avoid ambiguity.

Common error

Avoid using "presence of these substances" without specifying what the substances are or why their presence is significant. Always provide context to avoid vague or meaningless statements.

Linguistic Context

The phrase "presence of these substances" functions primarily as a noun phrase, often acting as the subject or object of a sentence. It denotes the existence or occurrence of specific materials, as demonstrated by Ludwig examples in scientific and news contexts.

Expression frequency: Uncommon

Frequent in

Science

55%

News & Media

30%

Formal & Business

15%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "presence of these substances" is a grammatically correct and formally appropriate way to indicate the existence of specific materials. Ludwig AI validates its usage across scientific, news, and formal business contexts. While not exceedingly common, it's a precise phrase suitable for analytical reporting. To ensure clarity, always specify which substances are being referenced. Consider alternatives like "existence of these substances" or "detection of these substances" to slightly alter the emphasis.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

existence of these substances

Replaces "presence" with "existence", focusing on the fact that the substances exist.

detection of these substances

Emphasizes the act of finding or identifying the substances.

identification of these substances

Focuses on the process of recognizing and naming the substances.

incidence of these substances

Highlights the occurrence or frequency of the substances.

availability of these substances

Indicates the accessibility or obtainability of the substances.

concentration of these substances

Refers to the amount of the substances present in a specific area or volume.

prevalence of these substances

Suggests the commonness or widespread occurrence of the substances.

discovery of these substances

Highlights the act of finding or becoming aware of the substances for the first time.

observance of these substances

Refers to noticing or witnessing the presence of the substances.

demonstration of these substances

Implies a clear showing or proof of the existence of the substances.

FAQs

How can I use "presence of these substances" in a sentence?

Use "presence of these substances" to indicate the existence or detection of specific materials in a given environment. For example, "The study examined the "presence of these substances" in the soil samples".

What can I say instead of "presence of these substances"?

You can use alternatives like "existence of these substances", "detection of these substances", or "identification of these substances" depending on the context.

Is it appropriate to use "presence of these substances" in formal writing?

Yes, "presence of these substances" is suitable for formal writing, especially in scientific and technical contexts where precise language is important. However, ensure the context clearly defines which substances are being referred to.

What's the difference between "presence of these substances" and "concentration of these substances"?

"Presence of these substances" indicates that the substances are merely there, while "concentration of these substances" refers to the amount or level of the substances in a particular area or volume. The former confirms existence, the latter quantifies it.