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  • Nicolás Hoffmann 1,
  • Gonzalo Tortella 2,3 and
  • Olga Rubilar 2,3,*
  • et al.

Reviewer 1: Anonymous Reviewer 2: Quanli Hu

Round 1

Reviewer 1 Report

I would like to thank the authors for the opportunity of reviewing their work. I believe that some relevant corrections should be made in relation to different aspects of the manuscript in order to improve its overall quality.

ABSTRACT: line 32: I think that the word “but” can be removed. Similarly, remove this word from line 305.

INTRODUCTION: Please, elaborate more on the agricultural applications. See for example the following recent papers for more information:

https://www.frontiersin.org/articles/10.3389/fenvs.2017.00012/full

https://www.sciencedirect.com/science/article/abs/pii/S246858441830062X?via%3Dihub

https://www.nature.com/articles/s41565-019-0439-5

https://www.nature.com/articles/s41565-018-0131-1

Also, put a “.” after the word “hysteresis” (line 43)

RESULTS AND DISCUSSION: Please, improve the resolution of the graphs.

CONCLUSIONS: Highlight the strengths and limitations of your study and suggest future directions in this field.

Author Response

Please see the attachment

Author Response File: Author Response.docx

Reviewer 2 Report

The superparamagnetic iron oxide nanoparticles were synthesized by biogenic and chemical methods. The toxicities of iron oxide nanoparticles were evaluated by plants and aquatic organisms. This manuscript can be accepted after major revision.

  1. For XRD patterns of iron oxide nanoparticles, the authors should provide the JCPDS numbers and the lattice parameters of their samples.
  2. It is better to provide SEM or TEM images of the fabricated samples. The morphologies of the samples can be directly observed by these images. In addition, it is easier to distinguish polydispersion and monodispersion from SEM images.
  3. If possible, please calculate Fe2+ and Fe3+ ratio from XPS data.
  4. Please provide high pixel figures.

Author Response

Please see the attachment

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

I would like to congratulate the authors for their effort to improve the overall quality of their manuscript.

Reviewer 2 Report

This manuscript can be accepted in present form.